Several services are being killed off. Google Sync for BlackBerry is being shown the door as Google wants users to move to either BlackBerry Internet Service (BIS) or the Google Apps Connector for BlackBerry Enterprise Server. If you already have Google Sync for BlackBerry installed it will continue to work but it won't be available for download after June 1. Google says that these "alternatives offer a better overall experience, as you can sync your email messages, calendar and contacts through a single service".
The Patent Search homepage is now being redirected to the standard Google search page as Google says they can offer superior performance and fucntionality that way.
In a move that is sure to bother some Linux users, Picasa for Linux is being deprecated. Launched as a WINE-based version of Picasa in 2006, this Google Labs project will continue to work but will no longer be updated.
Similarly, Picasa Web Albums Uploader for Mac and Picasa Web Albums Plugin for iPhoto will no longer be available for download although Google's Picase for Mac (currently at version 3.9) will continue to be offered.
Several other tools such as OnePass, the mobile web app for Google Talk and Google Related will also ride off into the sunset.
Source: Google Offical Blog.