New updates for Google Earth and Picasa have been released today.

Both are minor 'point' releases, which seem to be focussed on some bug fixes. I've not found any new functionality in either one yet.

how do you know that mate?

Fire up either one – it'll ask you if you want to download the newest version.

The change log / release notes for both of them list the bug fixes.

No real change for Google Earth :-|

July 20, 2006
Beta 2, Build 32.40

We've made many improvements, and fixes for this release. Thanks for sending us all of your bug reports and feedback!

We've fixed an issue with the Upload Manager re-sending photos to Picasa Web Albums.
We've also fixed some issues with burning backup disks, and creating backup sets.

  
Have you tried all of our new features yet?

Upload to Picasa Web Albums
Use the new "Web Album" button to post your best photos online to share with friends and family. For more information about Picasa Web Albums, see the 'Learn More' page.
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 know you've wanted this feature for a long time! We've made importing photos from your camera faster too.
New Picasa Screensaver
Automatically see a collage of all your starred photos in the screensaver!
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, Geo-Tagging with Google Earth, better caption editing, ability to configure the row of buttons, special "Starred Photos" album, search by ISO and focal length.
  

What's really new in the screensaver?

Automatically see a collage of all your starred photos in the screensaver?