R2DJ

Since I've heard of the news that there will be a GOTY version of Batman: Arkham City this month, I'm pretty pumped up again, considering I've finished the game already but I wanna play through it again and I didn't really fiddle with the challenges as I just rented it. Now that I've pre-ordered it, it's gonna be a keeper and I'll tackle the challenges when I get it, not to mention the new Harley DLC.

I've also heard that Arkham City will have future episodes, I'm not really familiar with how content works across different versions of games, so I'm asking these questions:

1) Are there any other games that had DLC after a GOTY/ultimate version was released? I look at Borderlands, Arkham Asylum, and BF: BC2 and, correct me if I'm wrong, those games did not have DLC released after a GOTY version was released.
-You are correct. No DLC has come out for those games mentioned after the GOTY edition was released. I have yet to find a game that does release DLC after the GOTY edition is released, so who knows.

2) I've only ever owned one physical GOTY version, and that was Arkham Asylum. On the 360, the GOTY version was different than the standard version in a way that saves cannot be used inbetween the two versions and the achievements list are separate. Does this also apply to GOTY versions? I haven't tried a game where I played a standard edition beforehand, finished the game, bought the GOTY months later and continued the save.
-Arkham Asylum was the first 360 game I encountered that had a separate achievement list. Most GOTY edition for games count as the regular game and do not have seperate achievement lists. Arkham City GOTY edition will most likely have a separate achievement list.

3) How are the extra content usually bundled? Arkham Asylum had all the content on the disc. Are there other GOTY releases where the extra content came in the form of a download code/extra disc/online pass?
-DLC that come with GOTY editions usually have codes to redeem it through download and not on the disc. Again, Arkham Asylum was the first 360 game I encountered that had the DLC on-disc for the GOTY edition.

One possible explanation I've heard for this bullcrap is that the licenses EA hold for the music will expire on that date, or something like that.

Still, leave it to EA to pull any sort of dirty business practice as not allowing people to continue using a product they paid for. People probably did not buy the download expecting an expiration date on the playability. The support and the servers perhaps, but not the actual ability to play it.

It could be they really were going to pull the plug, but the outcry made them reconsider the action and call the message "an error".