You may have seen this already but Adobe released the final version of Lightroom 4.2 today along with the corresponding Camera Raw update. If you use the "check for updates" feature in Lightroom you should see the update. There's a number of bugs fixed adds support for the latest cameras including what Adobe is describing as preliminary support for the Nikon D600. Not sure what they mean by that but anyway. Here's the full list of new cameras supported:
Canon EOS 650D / Rebel T4i
Canon EOS M
Fujifilm XF1
Fujifilm X-E1
Fuji FinePix F800EXR
Leaf Credo 40
Leaf Credo 60
Leica S
Leica D-LUX 6
Leica V-LUX 4
Nikon Coolpix P7700
Nikon 1 J2
Nikon D600*
Panasonic DMC-G5
Panasonic DMC-LX7
Panasonic DMC-FZ200
Pentax K-30
Samsung EX2F
Sony Alpha NEX-5R
Sony Alpha NEX-6
Sony Alpha SLT-A99V
Sony DSC-RX100
For more info on the release including the list of bugs quashed check out this post on the Lightroom Journal
