New in 4.3:
- HiDPI support within the Library and Develop Modules. HiDPI provides support for Retina-enabled Macs.
- Additional raw file support for 19 cameras including the Canon EOS 6D, Nikon D600 and Olympus PEN E-PL5
- Corrections and bug fixes for issues introduced in previous versions of Lightroom.
This update is free for Lightroom 4 users, and can be downloaded here.
Upgrades from previous versions of Lightroom start at $79, and the full version is $149.
Note: Amazon currently has Lightroom 4 for a low price of $113.