For anyone interested:
I just got off the phone with Browning to get the details on this special run. They told me that they will be making about 15 of the Gran's deliverable in August. They will also offer the 16 Ga in other model Citori's but I just checked on the Gran.
According to Browning, they have 5 of the Gran's on b/o now so I went ahead and got my local guy to lock one in for me.
billhanusbirdguns.com has a short write-up about the special run if anyone is interested.