Windows Identity Framework (known as Geneva) has now been released as a release candidate (RC). This is great and will have a big impact on how identity and some other security related parts of your applications will be implemented. If yu haven’t started use claims yet, now is the time to do some reading to catch up and shift yuor mind. Vibro’s blog is a great source, as well as Dominick Baier, Keith Brown and hopefully you will also find some useful material on this blog (look in the Security Token Service tag).