Adobe Lightroom 4.4 full release is out now and available for download here:
http://www.adobe.com/downloads/updates/
The Adobe Photoshop Lightroom 4.4 update includes these enhancements:
Improved demosaic algorithm for better raw file support on cameras with X-Trans sensors. This includes the Fujifilm X-Pro1.
Additional camera support for 23 cameras including the Canon EOS 1D C, Nikon Coolpix A, and Samsung NX300.
Corrections and bug fixes for issues introduced in previous versions of Lightroom.
I have high hopes... Looking for more speed!