I'm not entirely sure how to take this statement from BioWare's Dr Ray Muzyka regarding the astonishing drama surrounding the conclusion to the Mass Effect trilogy. It's not saying outright they'll change the ending of the game, but there's this:
Building on their research, Exec Producer Casey Hudson and the team are hard at work on a number of game content initiatives that will help answer the questions, providing more clarity for those seeking further closure to their journey. We’re working hard to maintain the right balance between the artistic integrity of the original story while addressing the fan feedback we’ve received.
Which seems to suggest something. More endings, rather than changing what they've laid out? I can't see them setting out to rewrite the story, because it would undermine the universe they created, but there's the suggestion of clarification and expansion. If you're playing the game right now, you might want to stop and hold off until April when whatever it is they're working on is released. I'd read the entire statement, too, because Muzyka has clearly been stung by the reaction. He's proud of the game, but he also wants the fans to know they're important. Whatever this means, expect ending-related DLC.