Note: they're announcing 2.0, not releasing anything ready for prime time.
The announcement indicates that they're releasing SproutCore 2.0 Developer Preview with the caveat:
"SproutCore 2.0 is still under heavy development and APIs are likely to change."
The announcement indicates that they're releasing SproutCore 2.0 Developer Preview with the caveat: "SproutCore 2.0 is still under heavy development and APIs are likely to change."