Not being entirely happy with free post-launch content is a new one. But we're kind of secretly hoping that BioWare announces a Season Pass of sorts for Mass Effect Andromeda. One focused on delivering new single-player content, like new planets to explore and so forth. And, they still might. With today's announcement really only putting the game's multiplayer content in line with Mass Effect 3. In that all future maps and stuff will be free.
One way the new Mass Effect's multiplayer will differ from Mass Effect 3's is that it won't directly affect the single-player story. Which is a good thing.
Mass Effect: Andromeda is out March 23 on PC, PS4, and Xbox One.