Beta (release candidate) versions of new Lightroom and Adobe Camera Raw can be downloaded free now from Adobe Labs. You won’t get these updates using the normal search for updates in Adobe apps, as they are not the final release and can not be found on Adobe.com Downloads yet.
These updates will work until April 30th by which time there will be a full release version. For Sony users, the updates provide better lens correction for the RX-1, support for the Hasselbad Lunar (NEX-7 based luxury camera), and lens profiles for the new type Sigma 18-250mm HSM Macro and 180mm prime macro lenses. There are also some improvements to the conversion and controls.