Bullet 2.83 released on github
You can download the Bullet 2.83 release from github here
See the docs/BulletQuickstart.pdf guide as part of the SDK download.
Some of the features include:
A new example browser, based on OpenGL 3+. It is still work-in-progress and not all demos have been ported over yet. Still, it is a better way to explore the Bullet SDK.
Import of URDF files, universal robot description files. A URDF file can be imported as rigid bodies (btRigidBody) or as multi body (btMultiBody). See the example browser under importers.
Improved support for btMultiBody with multi-degree of freedom mobilizers, thanks to Jakub Stepien. See examples/MultiBody/MultiDofDemo.
New btGeneric6DofSpring2Constraint, replacing the old one. Thanks to Gabor PUHR and Tamas Umenhoffer. See the example browser under API or examples/Dof6Spring2Setup.
OpenCL demo integrated in the ExampleBrowser. The demo is disabled by default. See docs/BulletQuickstart.pdf how to enable it.
Implicit integration of gyroscopic forces. See example browser under API/Gyroscopic for the Dzhanibekov effect.
Please enjoy, and expect improvements in future releases.