Microsoft has just announced a new version of the ISIP (Identity Selector Interoperability Profile, the main document describing information card interaction behavior). This is a BIG deal, certainly from an interoperability perspective, although I don’t expect much to be a surprise in the document, as the CardSpace team has been working hard to blog upcoming features.
In conjunction with the new documentation, there is also a Service Pack release for .NET 3.5.   I can’t wait to see what goodies await in the CardSpace arena — perhaps it will mostly be under the hood, only play time will tell…
Er, when exactly I’ll get that play time is a different question. Soon, I hope. If you get there first, be sure to let me know what you think!