Since we're in July now realistically Apple's strategy for iMac, MacMini, MacBook and MacBookPro would be to target Merom for the christmas frenzy season. Meaning just a few months away to do refreshes across the line, that is, targeting September or October for the Oct-Nov-Dec quarter.
Looking at any sort of upgrade in August or this month does not make sense, given Apple's focus on WWDC-Leopard and the Mac Pro.
If there are any refreshes across the current Intel line up this month or August, that would be "too early" before the Christmas quarter.
Therefore again, we're looking at for the Oct-Nov-Dec quarter, models moving up to higher speed Yonahs, some other spec changes, and Merom likely on the MacBookPro, and then iMac goes Merom or Conroe. iMac going Merom or Conroe would be related to which is the easier internal-engineering pathway.
As a sidenote, again, since we're in July/August, iPod updates will come at the earliest September, again in the run-up to Christmas. August would be "too early".
So currently, at least to me, the "Apple roadmap" (an oxymoron of sorts) seems clear.
Then once they clear out the Christmas frenzy quarter, Macworld will be the space for the next level of innovation to prevent a sharp dropoff in sales. There will be something cool, and "one more thing" to inject some fresh blood into the Jan-Feb-March quarter.
Personally, I think the Intel transition has gone as good as it can get, Apple needs to clean up some hardware and software issues in the meantime, August for WWDC-Leopard and Mac Pro, and then we'll just have to wait until Christmas lead-up for refreshed product lines.
It is likely that sales of iPods are starting to get lost due to the lines getting a bit stale and lack of "more features" so we'll just have to see what Apple comes up with in the next few months. There is enough iPod momentum going on to carry them through to Sep/Oct for a nice fresh funky iPod which will do a little more to be exciting, but not too much to be confusing.
Thus, ends my commentary on teh Apple roadmappy.
edit0: MacPros and xServes almost simultaneously will be nice. But we really don't know what's happening on the xServe side of things, do we..?
edit1: Personally for some reason I have a psychological issue with anything under 2.0ghz at this stage. But whatever, MacMini and MacBooks under 2.0ghz will do fine for what they are, and what they need to do.
edit2: I wonder if Apple should have continued availability of PowerBook G4 for the Adobe/Macromedia pro users. For those whom Rosetta is not workable and want some value for money. Rather than these pro users having to look to old stock at Apple resellers or eBay. However these users may form a minority or they may already have PowerBooks/ PowerMacs to tide them through and so not a major target for Apple.We should understand by now that MacPro will be majorly targeted towards the Pro Video crowd using Apple's Universal range of software
. This is where the business, growth and margins are, not the print design/web design market which is pretty much chewed up by PC/Windows now. This also clearly sidesteps any Rosetta issues in the new fandangled Apple Pro Computers lineup