It is indeed. There are actually a lot of things centered around GWT 2 versions that aren't covered in the current docs that should be.
Some highlights:
You can package a "gwittir-introspection.properties" file with your model (or your app) that shows in the form of:
[class or interface name] = [comma separated properties list]
This works really well with the HasValue class from GWT2, since most of the UI widgets implement HasValue<T>. Using the BindingBuilder will provider wrapper functions for HasChangeHandlers against HasValue, and eliminate the need for a lot of the basic Gwittir BoundWidgets.
BindingBuilder is cool, BTW.
There is also the new REST and Serial packages (only really about JSON completely now), but they are handy.
Honestly, the delay in releases is mostly about my wanting to have stuff really wrapped for GWT 2 before the 1.0 release, but there are at least a few people still using and maintaining the code until then. Really the goal was to get a 1.0 release out this summer, but it hasn't quite happened yet.