Yep, preordered mine last week as well for XBONE. At it's core it's still an FPS, but the addition of the titan mech really changes the dynamic of the "everyday" first person shooter. I've poured more hours than I care to admit into every major FPS going back since MW2/BFBC2, and this is the first time in a while where I was really impressed with it. The beta maps played really smooth. You'd also think that being in a mech would make them overpowered, but the balance is still really good. All pilot (human) players have anti-mech weapons that do more damage vs. mechs, so it's really a pretty evenly matched game whether on foot or inside of a mech.
Not crazy about the auto-pistol and it's autoaiming capability. After dying many times to it, I decided that if you cant beat em, join em. What I found (now I didn't really know what I was doing) is that it takes too long to lock on. I'd end up getting killed while waiting on the 3rd lock to activate.
Over time I'm sure the hysteria will die down as it becomes repeatitive (as any FPS), but it is a nice breath of fresh air on the FPS scene.