There are several groups submitting UML 2 proposals to OMG. While the winner’s site will be the most useful, the other submitters’ sites will have useful information on how they see UML 2 being used—and some alternative approaches to modeling:
UML 2.0 Partners: The leading group, called U2P (UML 2.0 Partners), has a Web site (www.u2-partners.org) where you can download their latest proposals, catch the latest news, and make comments on their Yahoo! group.
Community UML: One of the proposing groups, the communityUML (yep, one word), maintains a Web site of all the various proposals, including their own proposal called 3C (Clear, Clean, Concise). See http://community-ml.org/submissions.htm.
2U Consortium: A specific Web site for the 2U Consortium (Unambiguous UML) can be found at www.2uworks.org.
pUML: A specific Web site for the precise UML group (pUML) can be found at www.cs.york.ac.uk/puml/uml2_0.html.