Stable releases have been tested and used in our Beta channel which helps eliminate the chance you'll run into bugs. If you're not sure which releases to use, you should probably use Stable releases.
Patch for r171
Stable update: 'Move to' behavior, timeline examples and more
Another patch
Patch to resolve some issues
Stable update: timeline improvements; scripting autocomplete; lots more
Stable update: JavaScript coding, tagged timeline keyframes, action comments & more
Stable release: Timelines, built-in functions, raycasting, Bluetooth & more!
Patch for some Tween issues
Stable release: Project Bar search; new addons; experimental timeline & more
Stable update: Z elevation, new export options & more