* Upload to Picasa Web Albums
Use the new "Web Album" button to post your best photos online to share with friends and family.

* Save edits to disk
Save edits, undo saves, and revert to the original file with ease. We've got batch saving too! Picasa will even match the jpeg quality of the original. Right-click on your saved files to try the new "locate original" feature.

* Folder hierarchy views
Browse through folders Explorer-style. Use the button at the top of your Albums List to try them out.

* Improvements to Import
Import into an existing folder. (...) We've made importing photos from your camera faster too.

* Better RAW support
Now you can work with RAW files from the Canon 30D, the Nikon D200, Adobe DNG files, and more.

* Many other enhancements
Larger thumbnails, better caption editing, ability to configure the row of buttons, special "Starred Photos" album, search by ISO and focal length.