Looking at my orders, I think Mass Effect: Andromeda is the only one that I'm doubtful would come out by the end of next year.
Otherwise, maybe Fall/Holiday 2016 Is the latest (Horizon).
Nah from what I'm hearing, the game is very solidly being completed. They're saving gameplay reveal for next E3, IMO.
ME3 came out March 2012, so sticking to holiday 2016 gives BioWare almost 4.5 years work on the game. I think it's because they're going all out. Have to top the surprise hit multi-player of ME3, and develop a more meaningful story after the brouhaha of ME3 ending.