We made a small change to rename two of the annotations and fixed a few defects.
All providers now run against the API - which wasn't the case until recently.
We're looking to make some changes as to how the TCK uses the providers for testing, but apart from that it's complete as far as I can tell - until we get more feedback that is.
Lastly it's important to realize that the spec will not ship annotation provider implementations. The spec will only contain the Annotations themselves. It's up to implementors of containers / frameworks to implement them as they should work with any compliant implementation of JSR-107. That is, an implementor of JSR-107 is not required to provide Annotation support. Containers/Frameworks that provide Annotation support should work will all compliant implementations of JSR-107.
Hope this helps
-- Brian