Blender 2.74 is available.
A lot of work done on fixing and stability, and big new features from Gooseberry are in!

some new features:

-noise, speed, memory consumption improvements for cycles, in addition to a new node, "pointiness";
-AO e DOF for viewport, via OpenGL;
-custom normals and possibility to transfer data layers between meshes;
-massive improvements in hair dynamics...

Go to official website for the complete features list and descriptions, and to download page.