Grouping ?

For a few days now I've been reading and watching game play footage and reviews.  No one ever seems to talk about parties, dungeons or group content........I'm trying to understand what makes this an mmo ?.......Also, it the game on a mega server ?

However, I did find this ( quote ) :

From my experience in the last 2 betas, I am sad to say group play has very little advantages. It is usually better to solo, for several reasons:
1.There is no kind of XP bonus in team.
2.There is no real ''elite zones''. And by that I mean, a place with difficult mobs. Mobs are easy so soloing is also easy.
3.There is a few good spots for grinding, usually camps with a lot of mobs. But those aren't big enough for groups though. More suited to solo really.

So basically what is really needed right now, in my opinion, are big open dungeons with difficult yet rewarding mobs. Sort of like what we had in old school MMORPGs, with huge rooms crowded with mobs. Also they need to tweak the classes to actually promote team play. But that's another matter.