"... A Mac version of Picasa will be launched this year at Macworld ..."
It turns out that Google did indeed launch Picasa at this year's Macworld Expo, and it looks great. I haven't had a chance to try it out yet, but I will surely be installing it on my Macbook tonight.
today, we're releasing Picasa for Mac. While we've previously offered both a standalone Picasa Web Albums uploader and an iPhoto plugin for Mac users, Picasa for Mac finally brings all of the advanced sharing and sync features of Picasa to the millions of Mac OS X users who use Picasa Web Albums. Not to mention the "it-slices-and-dices" feature list that covers everything from color balance to collages.
It's about time Mac users had an alternative to iPhoto.