Long custom iMac order times don't mean that a refresh is imminent
A new report pointing out that configure-to-order iMac models have long lead times is firing up speculation that an update is imminent, but as has been the case for five years, there's no real correlation between long lead times and updates.

24-inch iMac
A report on Friday has taken a look at the availability of Apple Silicon iMacs. The report correctly points out that configure to order iMacs have about a month of lead time before delivery.
Unfortunately, the report by the normally well-informed Macotakara then immediately jumps to conclusions about it, and suggests that a New iMac with a M2 and M2 Pro processor is imminent.
While an iMac refresh before the end of the year may be happening, the conclusion drawn is a case of a maybe-correct conclusion drawn from bad data.
Apple's M1 iMac was released on May 21, 2021, so it has been some time since its introduction. To date, despite a long string of rumors about it, it has not received an M2 update, when everything else in Apple's Mac line has.
However, the inference that a configure-to-order long-lead time points to an imminent refresh is wrong. Lead times of M1 iMacs that sport custom configurations have been similar since November 2022, with lead times sometimes weeks longer than present on nine occasions in the last 11 months.
Every basic configuration is available for immediate shipment or pick-up from Apple retail. And some of the configure-to-order SKUs are available for pick-up from a local Apple Store, with how many available generally proportional to the overall sales volume of the store.
iMac has been a back-to-school computer for some time
Apple hasn't had a fall iMac release since 2014. More recent updates were in June 2017, March 2019, August 2020 for the last Intel iMacs and April 2021 for Apple Silicon. As of late, the iMac has mostly been a "back to school" computer, and not a Christmas season one.
The iMac Pro shipped in December 2017, but was previously announced at the 2017 WWDC.

The rear of the 24-inch iMac.
While Apple could launch an M2 iMac at any time and make logical sense, there are claims that it will instead skip the M2 generation entirely and be one of the earliest M3 devices.
24-inch iMac speculation has been going on for a long time
Rumors of an M2 24-inch iMac go back to February 2022, with speculation that Apple was going to launch a M2 model to match the rest of the range. Over 18 months later, that prediction has failed to come true.
A mere two months later, the rumor shifted to assume that a M3 iMac was on the way. That, obviously, also hasn't happened.
The rumor mill at this point has mostly coalesced around the prediction that M3 processors aren't coming until early 2024.
Read on AppleInsider
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The proof is in the sales. Apple hasn't even seen it worth their time to upgrade it to an M2 to keep it current, with M3 already on the horizon. Undoubtedly Apple is warring with itself right now over discontinuing its once-critical iMac, or spending money to update a Mac that doesn't sell.
Instead, it should be repositioned as a workstation computer. Yes, that means it would perhaps have to lose the colour options, but beefed up with an M3 and maybe a 25-27” screen it would make for a very attractive corporate workstation (which tend to get swapped out every 3-5 years for depreciation reasons anyway).
It could be called the WorkMac or something — and maybe Apple could reinvent the iMac yet again.
1) labor prioritization.
iMac has never been very portable or upgradeable, so this is nothing new. The M1 iMac is arguably the most portable iMac, as it weighs almost nothing compared to its predecessors. iMacs do keep their resale value better than non-Apple computers, so they are reusable. They aren't impossible to sell or trade at all. Just look at eBay. They do remain useful for a long time.
Until the M1 Mac mini, the mini has always been an underpowered machine with horrible value. The current mini and Studio basically can't be upgraded, besides replacing the entire machine. A big part of the value of the iMac since the Retina models has been getting a top of the line display included, so this is a positive, not a negative.
It is weird that Apple has taken so long to update the iMac, which used to get updates every year. The cadence of all Mac releases has slowed down since 2020. An iMac with more than 16GB RAM is definitely needed. The all-in-one form factor is extremely good for office use, and even office users can use more than 16GB RAM. As far as cost-benefit, we know that isn't the main consideration for development, otherwise they never would have made the 2019 or the 2023 Mac Pro.
He thinks the form factor is not attractive. The iMac is a desktop computer, and it has an award-winning form factor. It is even better with a VESA mount because it can float over your desk and be positioned in every way possible. My current 27" iMac 2020 has the VESA option and it floats over my desk without the stand taking up room, or a computer sitting on the desk. The Studio Display (that replaced the iMac with the Mac Studio) has the same form factor as the iMac. A Mac mini or Mac Studio and a separate display with all the cables coming off of them does not have the same elegant look as an iMac.
He thinks the iMac is not upgradable. Does he know that the MacBook Pros are also not upgradable? All Apple Silicon Macs are no longer upgradable. You must buy what you want at the time of purchase. Yes, the 24" iMac now falls under the category of non-upgradable, but now all Macs are not upgradable. So that is a weak argument.
He specifically discusses the Intel iMacs as not upgradable and not reusable. The Intel iMacs ARE upgradable! The 27" had user-replaceable RAM and before the 2020 iMac with the T2 chip, the SSD was also upgradable, by the user! I upgraded the RAM in my 27" iMac to 128GB for 1/4 the price of what Apple charges, and I did it two years after I bought it when RAM was at a low price. The 21.5" iMac also had upgradable memory and upgradable drives, once you removed the display, which is not hard to do.
He claims they are not re-usable. He thinks once a Mac is considered vintage or obsolete, you must throw them away. My 2012 27" iMac would disagree. I upgraded the memory to 32GB, replaced the spinning drive with a 1TB SSD, and also added the OWC 2TB blade SSD to the factory SSD slot. It was not hard to remove the display and re-attach it with new adhesive. Now this 2012 iMac can boot Mountain Lion, the original OS, Catalina, the latest version it can run, and also Windows 10 in Boot Camp. If I want to try OpenCore, I could upgrade it to Monterey or Ventura. I use it in my garage and iTunes also feeds to a stereo in the garage too. So I can do lots of things with that 11 year old iMac. I can also use my 'obsolete' Mac Pro 2008, QuickSilver G4, Power Mac G5, and Mac LC 575 for running vintage apps and games too. I guess he thinks those are un-usable too.
All we wanted was a 27" 5K iMac with an M Pro or M Max CPU, just like in the MacBook Pros, and the iMac would have been a top seller with customers. Instead, we got a bare-bones 24" iMac with a base model M1 chip that was hardly a valid replacement. And Apple has done nothing with it for almost 2 1/2 years. Sad.
My 27" 2020 iMac even has Parallels with Snow Leopard Server as a VM so I can run older PowerPC apps. I guess that is un-usable too since it is an Intel iMac.
You can roughly work out what the unit volume is at each price point by knowing that Apple's Mac ASP is ~$1300.
($1000 x U1 + $2000 x U2 + $3000 x U3 + $4000 x U4) / (U1 + U2 + U3 + U4) = $1300
U1 = 0.65, U2 = 0.30, U3 = 0.04, U4 = 0.01
Even with these numbers weighting 95% of units below $3k, it's still above Apple's ASP. This means unit sales above $3k are < 5% and the M2 Pro 27" iMac would start around $2700.
Apple's been in the business a long time and they know what sells and what doesn't. With the Mac Studio, they can sell M2 Max for $2k and hit a larger volume of buyers who already own monitors or buy cheaper ones.
They still sell the Mac Pro at a much higher price point so they could choose to make a 27" iMac but the Mac Pro is due to important customers that have requirements for PCIe cards. There are no essential customers for an M2 Max 27" iMac who wouldn't buy a Macbook Pro or Studio instead.
If people would be prepared to spend $3800 on a 27" iMac, there are deals on M1 Max Macbook Pros that are in the same price range:
https://prices.appleinsider.com/macbook-pro-16-inch-2021
https://www.bhphotovideo.com/c/product/1668190-REG/apple_mk1a3ll_a_16_2_macbook_pro_with.html
https://www.bhphotovideo.com/c/product/1694969-REG/apple_mk0u3ll_a_studio_display_standard.html
M1 Max, 32GB/1TB = $2400 + $1449 Studio Display = $3849.
Here's one connected to a 3rd party 34" 4K OLED:
https://www.amazon.com/SAMSUNG-DisplayHDR-FreeSync-Streaming-LS34BG850SNXZA/dp/B0BLF2RWNV/ ($999)
You only really need one USB-C cable to the MBP as it will provide power. One power cable to the display, one to the MBP, everything else can be wireless.
As for the iMac update, it makes sense for the 24" model to get M2 chips before M3 launches in 2024.
2) If you want to keep upgrading your devices so you can get 20(?) years of use out of an old logic board or even a new logic board in an old case to save a small amount of money then maybe Apple isn't the best option for you. My advice is to buy the device that best suits your needs, which is why my MBP gets updated more than my iPhone, and why it's perfectly fine if you want to build your own Windows or Linux PC or feel that Android is a better OS. There are plenty of legitimate reasons out there that facile arguments don't need to be made. Jejune arguments like calling a working iMac a "useless paperweight" as if the components all fail as soon as the warranty has expired or suggesting that a desktop AIO with a 24" display is suppose to be portable don't help any point you may have been making.
I did have one of the first flatscreen iMac G4s (with the adjustable display arm). Like all iMacs back then and their PowerBooks you could upgrade a great deal. That iMac was certainly a challenge for anything other than RAM. The HDD was high up in the dome housing so it wasn't easy to get to. it was all simple sliding in and out of components would I still have it today and give my other Macs? Not a change. it's very odd when people long for a past that is gone for very good reasons. It's like saying you hate WiFi and cellular data because it's more finicky or requires more knowledge than simply plugging in an Ethernet cable. That may be true but it's objectively more useful with how well we can access data for entertainment, knowledge, and safety. For instance, I hope never have to use my Satellite SOS feature on my iPhone but I'm glad I have it and want it for everyone while also not being so foolish to compare it's speed to WiFi or 4G/5G.
Only a minuscule fraction of the customers actually use their computer products for a 6, 7, ..., to 10+ years, with a similar minuscule fraction actually upgrading. Perhaps someone can go prove otherwise, but if you improve the reliability of the product, and the installed base of that product has fewer repairs and dead units than a modular system with upgradable parts, the more reliable product line would have an overall lower carbon footprint. Reliability is improved with Apple's system integration.
For modular and upgradeable products, there needs to be a larger footprint of parts. Having something modular decreases reliability, further increasing the footprint of parts. A modular and upgradeable product is also more carbon intensive due to increased weight and size. So, you have to really wonder if it is actually more "green" than an integrated system like Apple's. I don't think it would be.
One interesting point about NAND and SSDs. They appear to be the most carbon intensive component of a computer. 2 TB of NAND storage will actually have the largest carbon footprint in a laptop. 1 TB of NAND storage in a phone is close to half the carbon footprint. So, wondering if Apple does on-the-fly compression, decompression, and reduces the need for NAND storage, it may have a rather large impact on reducing carbon footprint.
Apple has a pretty good idea of which markets their Macs end up in. For institutional buyers -- especially school district purchasing agents -- there's a pretty established pattern based on an academic school years, budget deadlines, etc. If Apple defers the M2 iMac until calendar 2024, they would know how many unit sales they would be missing out on in Q4 (CY 2023). It's not like this is Apple's first rodeo.
Remember that >85% of Macs sold are notebook models; this is nothing new, it has been this way for 10-15 years. From a unit sales standpoint, desktop Macs aren't a top priority. The entry level iMac is the biggest unit seller for desktop Macs and they clearly know the sales velocity of their current offerings.
I really wanted a 30-32" iMac. Now, I'm leaning Mac Studio and a decent 4K display or wider.
I'll miss my 30" Cinema Displays. Nah... probably not.
My sister needs to replace her family's old imac, but I told them to wait for a refresh. That was a year ago.
Hoping they refresh it with the M3, which is probably coming to Macbooks and Mac mini in the not too distant future