Blender 2.69 features a new hidden wire display option to help with modeling along with a mesh bisect tool and improvements to other tools. When it comes to Blender's Cycles Rendering, hair rendering was improved with a new shader, sub-surface scattering was improved, sky rendering has been advanced, and the Branched Path Integrator now supports GPU rendering. The Motion Tracker in Blender 2.69 now supports plane tracking. Blender 2.69 additionally features user-interface improvements, small improvements throughout, and more than 270 bug-fixes.
More details on Blender 2.69 can be found out from the Wiki release notes. The official announcement has yet to hit Blender.org, but the 2.69 binaries are available for download from this directory.