This is great news. I think this reaffirms EA's commitment to Mass Effect. I would not be surprised to see the main Bioware team jump back into Mass Effect after Anthem launches. I personally enjoyed Andromeda but it certainly was not the quality of the other three games.
Um, Anthem is not a game you are ever done with. It's a game as a service - the team will remain mostly in place around it to continue delivering paid for content. Like how Bungie is only ever working on Destiny stuff.
There's going to be another Dragon Age game, and we *may* see a return to mass effect after that if it's successful. But that won't be until 2022 realistically at the earliest.