Prettt much just continues to be 5e, small tweaks, great art, same old same old.
FYI, we have been using playtest and 2014 classes in the same adventures without issues.
My DM ran some numbers and found from a combat perspective they average out about the same, so any adventures from all of 5e should work just fine. We don’t really focus to much on combat so we didn’t notice any difference in play.
Maybe.I think folks are underestimating how much of a damage bump martial classes, in particular, got. So I think DMs will have to adapt to that after watching their players demolish what would previously have been a challenging encounter. Hopefully the new CR rules will help, though we have seen little of them so far, so it’s tough to say.
Old adventures will work, but will need balancing, though as others have pointed out, you always have to adjust for each party, anyway.
Monks will be the new hotness.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.