Ken Levine calls fallout an "important moment" for industry, says fans will be "very disappointed" if BioWare decides to write new ending.

[Pemalite]

RolStoppable said:
Idiotic analogy coming from the Bioware guy. A movie or book normally doesn't have multiple endings.

That's not entirely accurate. Books can have alternate endings, you shouuld take a look at the "goosebumps" novels.