The name very well may be up in the air, yeah, I wouldn't hold out for any particular confirmed trademarked title though as Blizzard have had a history of trademarking potential names and never following through with them.
As for the content, it looks pretty sweet. I'd definitely play either a Troll Shadowhunter specced Shadowstalker or a Orc Spirit-Mender! People are moaning that the idea of that class is pointless as it fills roles already filled, but frankly, any new class wouldn't suddenly generate another role without a huge game overhaul so meh. I do think Shadowstalker is a rubbish name for the overall class idea though, any better ideas out there?