Regina sent me a private PM and asked that I contact support. I've done so and have been going round and round with them on the issue. I think there is a bug somewhere.
I bought all the games at local stores including the GOTY edition. According to Regina, this means that I should not have the fire imp but that I should be able to purchase an upgrade through the online store.
I can't do that. I don't have any options for purchasing any upgrades. The store has nothing left to sell me since I've bought everything already.
Given the opportunity, I probably would not purchase the fire imp, but it should still be offered for those long time players that want it.
Game of the Year 2008 Upgrade Information
TheRaven