Eurogamer:
NetherRealm Studios is developing a new system to push Injustice: Gods Among Us downloadable content to all users' consoles.
The idea is that the game will connect to the internet whenever it's played and download the information required so that you'll be able to play against those who use DLC characters even if you haven't bought them.
This type of DLC is meant to be compatible with all forms of the game. That means that if I download new character A, I'd still be able to play with anyone who has not downloaded said character. How this can be seen as a bad thing for any reason is beyond me.