JohnnyDollar: Don't know if this has been talked about in the forum, but Warner Bros. has removed Securom and GFWL from the Batman franchise and moved them to Steamworks. They're on sale this weekend at 75% off.
My understanding is that retail keys can now be used to activate on Steam. Those that have the non-GOTY editions already are automatically upgraded to GOTY. I assume that upgrade is only for those that had the game in their Steam account already.
Just tried my key for Batman AC, didn't work.
Sent an email to Getgamesgo, we'll see what they say :)