Question about Rogue Imperial Stout

[CaptainPurge]

So I bought a bottle of Rogue Imperial Stout, 2007. It's the black stone-like bottle that says 2007 on it. Does this mean this particular bottle contains beer brewed in 2007, or does it just mean that it is the 2007 formula?

 

[thataintchicken]

brewed in 2007.
I love those ceramic bottles and reuse them for gifts.