The only new weapon is a dual pistols ranged option they added.
The thing I like about Dauntless is that it’s a much breezier game than MH:W. Sure, it’s not as deep or involved, but that means it’s also way more pick up and play. There’s far less setup, prep and tracking involved. You aren’t managing huge numbers of items. You’re not even responsible for carving so you don’t have to try an optimize your drops that way either. I’ve also never felt as committed to any weapon or gear so it leaves you free do do a lot more switching and experimenting.