As a last announcement during The Game Awards, BioWare showed off a CG trailer, announcing the next Mass Effect was in development.
Per an announcement on the official BioWare website:
"We’ve got a lot more in store for the Mass Effect universe and while we’ve got a long runway ahead of us before we’ll be ready to show you more, we hope the teaser set the tone for where we’re headed next."
While we know next to nothing other than this new Mass Effect is in devlelopment, the trailer, embeded above, is full of hints as to what the team at BioWare has in store for the next game in the series.
BioWare also showcased the next Dragon Age game in a new trailer at The Game Awards, giving a small taste of the story and some of the characters you'll see in the next game set in Thedas.