Well, I got a chance to play around with the new Neverwinter a little tonight. It's not too bad. I'm not sure I'm hooked yet though. At the beginning at least, it feels a bit linear.
So far it looks like they just have 4 main classes (fighter, thief, wizard, and cleric), and may eventually have multiple sub-classes, or tracks within them. But for the beta this weekend, there's only one version of each.
The control system seems smooth enough. They're limiting abilities to what you can easily reach from your WASD keys. That is, your main "at will" attacks are on the left/right mouse buttons, and your "per encounter" abilities (really just cooldowns) are on Q,E,R, and then the "dailies" (really just abilities that need to charge a resource up in this case) are on keys 1 & 2. Number keys 3-5 look like they can slot things like potions.