This new version of the Camera Raw plug-in replaces the original Camera Raw plug-in that was installed with Adobe® Creative Suite® 5 or Adobe® Photoshop® CS5 software. Windows Version here:

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5028     

MAC version here:

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5027

Also released is Lightroom 3.4. The Adobe® Photoshop® Lightroom® 3.4 update includes these enhancements:
• Additional camera support for several new camera models including the Canon Rebel T3i, Nikon D5100 and Fuji FinePix X100
• Corrections for issues introduced in previous versions of Lightroom 3

Windows download:

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5022

MAC version:

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5021

H/T/ dpreview