This is the closest release to the 2.50. what I was waiting the most was teh Texture Node Editing for my part, but I must say that the Video Texture in BGE is really fun to play with 
. Have fun
- Video Textures in Game Engine
- Logic API cleanup for Game Engine
- Texture node editing
- Etch-a-ton, armature sketching preview
- Dome rendering for Game Engine
- Projection texture painting
- Jpeg2000 support in sequencer
- New GE actuators
http://www.blender.org/development/current-projects/changes-since-248/
