Adobe Labs has completed beta testing of Adobe Camera Raw (ACR) version 6.4 (adds support for several newer digital cameras). You can get this update by using the check for updates option in your Adobe software or by visiting the Adobe Labs Camera Raw page for this download. This page is the place to visit for the latest ACR release and beta test versions when available.
Camera support for Photoshop CS5 and Lightroom 3
Support for the following cameras has been added from Camera Raw 6.3 to 6.4 and Lightroom 3.3 to 3.4.
Kodak EasyShare Z990
Canon EOS 600D (Rebel T3i / Kiss X5 Digital)
Canon EOS 1100D (Rebel T3 / Kiss X50 Digital)
Fuji FinePix S200 EXR
Fuji FinePix F550 EXR
Fuji FinePix HS20 EXR
Fuji FinePix X100
Lightroom 3.4 has just been released after completion of beta testing. In addition to adding support the cameras above it also addresses some minor issues uncovered in the previous versions of LR. You can get this update by checking for updates inside Lightroom.