Lightroom Journal has announced the availability of Lightroom 4.2 Release Candidate. There's a host of bugs fixed, and additional camera support including the new Canon EOS M mirrorless.
Unusally there's no lens profile list or mention of additional camera tether support. There's also some typos where 4.1 is mentioned too.
Release Candidates are versions with bug fixes that are known to be stable, but need testing on a wider variety of machines. If you need access to version that fixes a bug you find upsetting, or there's a new camera supported that you own, you should download this version.
The full list of supported cameras is
- Canon EOS 650D / Rebel T4i
- Canon EOS M
- Fuji FinePix F800EXR
- Leaf Credo 40
- Leaf Credo 60
- Panasonic DMC-FZ200
- Panasonic DMC-G5
- Panasonic DMC-LX7
- Pentax K-30
- Sony DSC-RX10
The full list of changes including Lens Profiles not mentioned on Lightroom Journal is on Adobe Labs. A heads up: Even though the FAQ on Labs says it will sit alongside your existing install, it's not true, it overwrites the existing one on Mac.