It looks like Apple is gearing up to announce something today. This followsthat a new iMac, a new Mac Pro, or possibly even a new input device might be forthcoming. Stay tuned.
Update, 5:42 a.m. PDT: The news from Apple, in brief:
updates to the all-in-one iMac line, including a new multi-touch Magic Trackpad.
a new Mac Pro line with up to 12 processing cores.
a new 27-inch LED Cinema Display.
See also other CNET coverage including the following: