Adobe has released [Adobe Reader 9.1 for Linux][1]! This is the first 9.x release on Linux and has a number of new features. My personal favorite is the inclusion of Flash Player so that [Portable RIAs][2] will work on Linux! Portable RIAs are beginning to catch on more and so it's great to have true cross-platform support for them.

 [1]: http://get.adobe.com/reader/
 [2]: http://www.jamesward.com/blog/portable-rias-tutorial/