I can talk about Incursions now, played it today at Gamescom.
Feels very, very intense. We've played a round on Giants Shadow but was a other version and heavily changed.
There are few classes you can select (like in R6 Siege) and your team has to conquer three points. When the game starts B is the only point which is available, A & C will unlocked later. You have to collect points, you get them for almost everything, killing, assists (not sure) and for example destroying tanks. Who ever reaches 11 points first, gets a big point. And the team which collects 6 big points, wins the game.
I hope this was a good introduction ^^