Runic Games' 2009 action RPG Torchlight was a bit of a success on the PC. It's XBLA release was equally successful and many had assumed that the upcoming sequel would also find it's way to consoles. However, it seems that Torchlight 2 exceeds XBLA's memory limit and, at the moment, Runic's not sure how they're going to handle it.
CEO Max Schaefer says that, since they're such a small studio, "[They're] very consciously trying to focus on one thing at a time and at the moment it's getting Torchlight 2 out for the PC."
An XBLA release of the title would require significant alterations, but that doesn't mean it won't happen. It's worth noting that they would "absolutely consider" a full retail release so, at this point, it's all up in the air. All we know is that they want to bring it to consoles, regardless of the form it takes.
Schaefer delves deeper into some other details in his interview with Eurogamer including co-op options, classes, modding tools, pets, and the sheer size of the sequel. Look for Torchlight 2 later this year.
Torchlight 2 is too big for XBLA [Eurogamer]