Here's how it's gonna go down.
The new iMac is a full touchscreen interface, like the iPhone. It is an ultra-thin panel that pops off of its base and becomes a touch-interfaced tablet computer.
If you want a more conventional desktop Mac, then get the high end Mac Pro, or the new Mac mini, now with a Core 2 Duo. Plug either into the new Apple Display with iSight.
Concurrent with this, Apple is releasing iWork '08, which includes Charts for spreadsheets and a new fully Word-compatible version of Pages, making it a great MS-Office-killer.
They're also releasing iLife '08, which brings iChat into the iLife suite, because...
iLife will integrate into the new .Mac, which now has full VOIP telephony as part of its service. It also has a robust blog engine (tied to iWeb), plus a couple features you never really thought of before.
Oh, and the Apple TV will, of course, interact ingeniously with all of the above.
There. Now isn't that more interesting than some little .Mac upgrade?