NEX-6: which lenses work with phase detection feature?

Does anyone know which lenses will work with the new phase detection AF system of the NEX-6?  I just ordered the camera (with the kit lens) and the Tamron 18-200 and the 2 Sigma lenses.  I didn't realize that the new phase detection system may not work with "older lenses," as described by one review I read today.  If anyone can point me to a definitive source on this, I'd very much appreciate it.  Alternatively, if someone has the NEX-6 and notices a difference between this body and another NEX body without the phase detection system (using the same lenses), your thoughts would be very welcome as well.

I understand that the NEX-5R also has the same phase detection system, so perhaps owners of the 5R might have experience with this issue too.

Thanks in advance,

Will