We're making a few breaking changes in 2.1.1 to the new features introduced in 2.1. (We're not supposed to do that kind of thing, but are hoping to get away with it in this quick follow up release before there is much adoption.)
I'd like to add a change to Activity to that list, in order to allow it to evolve in later releases when breakage of any kind won't be an option: I'd like to make Activity an abstract class instead of an interface, basically rename AbstractActivity. Any objections? rjrjr -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
