We'll respond shortly.
Yehuda Katz announces Amber.js (previously known as SproutCore 2.0). “Amber brings a proven MVC architecture to web applications, as well as features that eliminate common boilerplate. If you played with SproutCore and liked the concepts but felt like it was too heavy, give Amber a try.” -YK
Updates in active_admin silently fail if you are using it with inherited_resources 1.3.0. Use 1.2.2 instead.