I just updated to the latest trunk and lost all the gxt css again. The only way I was able to get my application to run was to copy the css and images from the gxt resources folder into my application's public folder.
Yep - noticed GWT 1.6 too. I didn't even know that was released until I updated GXT. I got it to work. Don't worry, I've had updates that broke a lot more than this one ;-) Was a little easier in the days when Darrell frequented the irc chat room, since you could get a fix on-the-spot. But it's still ok even though he now hides behind the corporate wall (just kidding).
I am also on trunk and have managed to move to 1.6 M1. Is there any word on when the css will be back? I don't mind muddling through the trunk while under development, but I'm waiting on HtmlEditor and my understanding was that would hit the trunk soon.
I'm using trunk too and hit an issue today. I've updated from SVN and a checkable DataList do not display any checkbox. It was working on the previous checkout from svn so I think everything will be back soon, just wondering if someone got the same issue.