Update is out next Thursday.
They added act 4.
They're removing the cruel difficulty (previously you had to run through acts 1-3 twice consecutively, now you run 1-4 + 3 small "interlude acts" that serve as fodder to level you up)
They added new tiers to support gems and removed the restriction that stopped you from having multiple of the same type supporting different skills.
They added a new auction house system that allows trading buying items from other players with no need for them to accept the trade, so if an item is listed on the trade site you may always buy it instantly.
There's a lot of balance changes and additions to the crafting system, too. It's looking like a biiiiig patch.
time to line up for the slop!
They added spears since the last time you played, but no other weapon types. Still missing swords, flails, daggers, and axes. But in terms of archetypes per se, there's already a pretty good spread of different playstyles, melee, ranged, and casters all have a fair number of viable options.
IMO they're missing fast melee options, currently there's a fair number of slow slam mace skills, but the quarterstaff playstyle only has like, 3 skills that deal good damage, everything else is for support or not currently viable. This patch is buffing a lot of skills and spears are getting some of their ranged outliers nerfed, so I guess the "fast melee" kind of archetype might be better.