Adobe Photoshop Camera Raw 6.1 Release Candidate

Adobe Labs has posted Adobe Photoshop Camera Raw 6.1 Release Candidate.
 
Release Notes:
 
Newly supported camera models include the Canon EOS 550D (Digital Rebel T2i/ EOS Kiss X4 Digital)
 
Camera Raw 6.1 includes new lens correction functionality that can apply profile-based corrections to accommodate geometric distortions, chromatic aberration and lens vignette effects. Manual corrections for geometric distortion as well as vertical and horizontal perspective transforms are also available. A handful of lens profiles are included for automatic correction and more can be created by the community with the Adobe Lens Profile Creator.
 
This release addresses a bug on the Mac platform that could cause Photoshop CS5 to quit unexpectedly when opening a file in the Camera Raw 6.0 plug-in.
 
This release contains performance enhancements designed to improve the responsiveness of the controls and the scrolling mechanism relative to Camera Raw 6.0.