After yesterday’s iTunes 7.0.1 update, I was surprised to find so many additional updates this afternoon: iWeb 1.1.2, iPhoto 6.0.5, iMovie HD 6.0.3, iDVD 6.0.3, GarageBand 3.0.4. They all appear to have to do with Aperture 1.5 compatibility. iPhoto also gets a bunch of new custom cards and postcard styles.
Check Apple Menu->Software Update to see what’s available for you.
Yes, the only thing missing is Aperture 1.5 itself...
*giggle*
Actually, there are a number of new iPhoto card styles too. The iPhoto download alone is 50-odd meg.