Apple today released Aperture SlideShow Support Update 1.0, addressing an issue with Aperture 3's integration of video clips in slideshows. Aperture 3 was released earlier today.This update addresses an issue affecting the playback of video clips used in Aperture 3 slideshows on Snow Leopard. The update is recommended for all users of Aperture 3.The update weighs in at 62.3 MB and requires Mac OS X 10.6.2.
While this does seem a little stupid on Apple's part for releasing an update to Aperture 3 on the day it's released, don't forget that it takes a while between going gold master & being released. You have to have all the CDs manufactured, distributed, etc.