The (sketchy) details so far:
--New iMac. Built-in iSight, slimmer chassis. New remote control called "FrontRow." Same pricing and screen sizes as current models.
--New iPod. Slightly larger, but thinner. Built-in video support (at least H.264, probably QuickTime support too), but still music-centered. Slightly larger, wider QVGA screen. 20GB and 60GB capacities, same prices as current models.