Exciting! It really does make sense to rebrand SproutCore 2.0. As a (light) user of both 1.x and 2.0, I completely understand the change. So much has been simplified -- the barrier to entry has dropped considerably, and the boilerplate factor is basically gone. Yehuda and Tom have done a great job with SproutCore, and I'm excited to use (continue using) Amber in the future.