tonykulla

iPhone chips are on a 12-month schedule, which leaves the M series on either a 12, 18 or 24 month schedule. I think the 18-month is what they're going for, since the 24-month schedule is simply too slow in the face of competition from AMD and Intel (and maybe someday Qualcomm). 

History: 

11/20  M1 - MacBook Air 

11/20  M1 - Mac Mini

11/20  M1 - 13" MacBook Pro

05/21  M1 - iMac 24" (redesign)

05/21  M1 - iPad Pro

10/21  M1 Pro - 14 & 16" MacBook Pro (redesign)

10/21  M1 Max - 14 & 16" MacBook Pro (redesign)

03/22  M1 - iPad Air

03/22  M1 Max - Mac Studio (new model)

03/22  M1 Ultra - Mac Studio (new model)

06/22  M2 - 13" MacBook Pro

07/22  M2 - MacBook Air (redesign)

My Projections:

10/22 M2 - iMac 24"

10/22  M2 - Mac Mini

10/22  M2 - iPad Pro

These are the easiest to do once chip production of the M2 is up to full speed. No redesigns necessary. 

03/23  M2 Pro - 14 & 16" MacBook Pro

03/23  M2 Max - 14 & 16" MacBook Pro

03/23  M2 Pro - iMac Pro 27" redesign*

Nine months after the M2 debuts, the Pro and Max variants should be good to go. They could probably do this earlier but they'll need good quantities of chips since the MacBook Pro models are very popular. The iMac Pro is a wildcard here. The demand is probably there but it may all depend on chip supply. I'm guessing they'll want to announce something truly new alongside refreshed MacBook Pros. 

05/34  M2 Pro - Mac Mini

05/23  M2 Max - Mac Studio

05/23  M2 Ultra - Mac Studio

05/23  M2 Ultra - MPX Module for Mac Pro*

A couple more months of production and there should be plenty of supply of the M2 Pro and M2 Max to update the MIni (now with Pro!) and Studio lines. 

I'm a bit stumped on what Apple plans to do with the Mac Pro line. One stopgap until M series performance is to release a module for the current (or updated) Mac Pro with an M2 Ultra. There are some technical challenges here but it's crazy enought that it just might work.

07/23  M2 - iPad Air

It's a quiet second half of 2023 in Mac land. The iPhone will be hogging all the glory in the fall. The 18-month cycle puts the M3 into 2024, but with all the CPU, GPU, and Neural Engine core updates from the A17 and on the 3nm process.