It still isn't official but it may as well be. BioWare keeps talking about it.
BioWare Edmonton general manager Aaryn Flynn has asked Mass Effect fans about their wish list, as it would pertain to a trilogy remake for next-gen consoles.
He got the ball rolling in the NeoGAF forums , posting up his own priority list for a three-pronged package of greatness:
Flynn also wants this trilogy to be a "seamless experience," so a player can go right through without transferring save files. As for the idea of implementing the newer combat mechanics from Mass Effect 3 into the original title, that probably won't happen. Said Flynn:
"First it would be a helluva lot of work. Second, I hate the idea of us being accused of 'retconning' ME1. Third (and I bet everyone on NeoGAF knows this), there are those who prefer ME1… So given that all that, it doesn't feel like the right thing to do."
What do you want to see in this trilogy remake?