Adobe has released the final versions on Lightroom 4.3 and Camera RAW 7.3, both of which had been released as release candidates earlier. The new versions have added 20 new cameras including: Canon EOS 6D, Canon PowerShot S110, Canon PowerShot G15, Canon PowerShot SX50 HS, Nikon 1 V2, Nikon D600, Olympus PEN E-PL5, Olympus PEN E-PM2, Olympus STYLUS XZ-2 iHS, Panasonic DMC-GH3, Sony DSC-RX1, Sony NEX-VG30 and Sony NEX-VG900. It also adds support for retina displays, fixes the issues of AVCHD videos not importing correctly, TIFF files having tonal shifts and the problem that occurs when deleting the top image in a stack making all the images disappear.
For a full list of new camera support and bug fixes, please see the Lightroom Journal. The updates are available via the update mechanism within Lightroom or Photoshop.