Sorry for the delay Adam. It depends what you are looking for: Pure compliance: - JPA 2 won't be final till sept '09 so nobody can be compliant till then - after JPA 2 is officially out, Sun tend to be late in giving the TCK to their licensees despite the fact that the RI has passed the TCK. Go figure. - it will take use a few weeks after the TCK is handed over to us to certify Same features / same APIs: - the annotations are mainly stable and we need to port the old Hibernate Annotations to the new Annotations - the criteria API is still getting refined a little bit We are targeting something like end of summer to get Hibernate on par with the spec (that can change of course) Feature equivalent: - we already have most of the APIs as Hibernate extensions - so you can technically benefit from what's in the spec (minor the typesafe criteria API) HTH Emmanuel On Jun 4, 2009, at 14:35, Adam Oren wrote: