User blog comment:G0LD3NF1RE/Dawnguard encounters issues with Playstation/@comment-2.99.111.119-20120903124254/@comment-173.180.201.88-20120904064103

Only the Fallout 3 DLC and Oblivion DLC was pushed onto a disc at the exact same time as the online content.

After all the DLC had been released, THEN they made a GOTY edition.

Either way you get Dawnguard in that case.