User blog comment:JakePT/ME3 Info Blitz Begins in April/@comment-1853169-20110330170312/@comment-1691295-20110331075835

True. I haven't seen much evidence that multiplayer is coming though. I know that all the BioWare Montreal people on Twitter are working on Single Player content, and the thing that started the multiplayer rumours was a single job posting for a single person and that job was about making single-player scenarios multi-player friendly. If anything that suggests Co-Op to me.