Lightroom 4.2 adds support for the EOS 650D and EOS M. It also adds tethered captured support for several recent EOS models, plus new lens profile support for recent lenses, including the three new STM lenses.
You can read more about the changes and download a Windows or Mac update at:
http://blogs.adobe.com/lightroomjournal/2012/10/lightroom-4-2-now-available.html
You can read more about the changes and download a Windows or Mac update at:
http://blogs.adobe.com/lightroomjournal/2012/10/lightroom-4-2-now-available.html