If you are like me I am sure you have been patiently waiting for the release of GWT 2.0. If you are ready to start some early testing of GWT 2.0 you can download a copy of the Milestone 1 release here. It is interesting to note that you no longer need to download the appropriate version for you development environment. Now you simply download this single version and then GWT will download the appropriate plugins for your browser. There are lots of changes in this Milestone 1 release so your best bet is to take a look at the release notes and also the GWT 2.0 Milestone 1 announcement in the GWT group here.
Be on the lookout for bugs and you probably don't want to attempt to use this version in your GWT production environment at this time.