The Release Candidate of Blender 2.69 is now available for download. New features include (FBX import, Plane tracking, Cycles SSS, etc). Please test and report any bugs that you may find! If you're unclear about the Blender bug reporting process, please check this video by Sebastian König.

From the announcement:

The Blender Foundation and online developer community is proud to present Blender 2.69. FBX import is now supported, along with improved export. New mesh modeling tools were added and existing ones improved. Cycles subsurface scattering and hair shading were improved, along with the addition of a new sky model, shading nodes and tone mapping in the viewport. The motion tracker now supports plane tracking, to track and replace flat objects in footage.

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