For all those who've installed the May 2005 version of DSL Tools (the one that works on VS2005 Beta 2), our friends over at ModeliSoft have just updated their tool - the one that maintains a designer definition as the domain model changes - to work with the new version. The announcement is here. Have fun.
[Edit - for those of you who can't see the post on the forum, the url is http://www.modelisoft.com/Dmd2dd.aspx]