So there's been a bunch of DA: Veilguard footage coming out since people got tons of hands on experience with the demo (like 7 hours worth of playtime) and the most head-scratching of changes has apparently transpired. You can no longer actually directly control your party members, you only play as the main char, and can only issue commands to them from the radial menu. No longer can you jump over to them and take complete control of them, experiencing the full effect of playing as every class in a single playthrough.
Yeah, I don't know why they'd do this. Still scratching my head.
Outside of that it looks like more DA though, so if you like DA I doubt you'll be disappointed.