COLLADA 1.4 im/export
Including support for basic physics data & texture from almost all other 3D modelers, increasing number of game companies and Google Earth support COLLADA 1.4 file format.
Bullet Vehicle Physics.
From the Physics Game Contest, check this Club Silo racing game using the new Bullet vehicle physics:
www.continuousphysics.com/ftp/pub/test/physics/movies/bullet_club_silo_19.06.2006.mpg
Bullet Rigid Body Physics is now default and replaces Sumo.
Importing older files will switch to Bullet by default. You can still manually switch back to Sumo and save the file.
Game demo files:
download.blender.org/demo/test/engine-graphics-demos-2.42-preview19.zip
download.blender.org/demo/test/engine-physics-demos-2.42-preview34.zip
More information, the Blender Game contest:
www.continuousphysics.com/mediawiki-1.5.8/index.php
Charlie's 2.42 GLSL Shader update:
download.blender.org/documentation/242GE_Docs/
General Physics Tips:
www.continuousphysics.com/mediawiki-1.5.8/index.php