In case you missed it, we pushed out a new CTP this week of “Oslo”. You can get it at the Oslo Developer Center. New stuff includes:

• The "Quadrant" modeling tool. Use Quadrant to browse and edit models in a repository database.
• Domain models for the UML 2.1 specification encompassing Use Case, Activity, Class, Sequence, Component diagrams, profiles and templates.
• An XMI importer supporting the 2.1 specifications, and covering the diagrams identified above.
• A domain model and loader for System.Runtime.

There isn’t a huge amount of change for the language portion of M in this CTP. Most of the major differences are under the hood and will only be apparent if you’re calling the underlying APIs directly. The only big thing I can think of is that the “identifier” keyword is no longer needed in a grammar—we’ll automatically detect the situation for you.

The feature I spent most of our last milestone working on appears to be finally coming together, so I hope to have more to say about that soon.