Yes this beasty will be live in GW2.
GW has always striven to be relatively group based, though with the introduction of hero's people are not grouping as much anymore, choosing to solo quests and missions.
GW2 whilst keeping with a strong PvP environment will be trying to strengthen the PvE aspects of the game. Similar to now we will have the individual group instances, but they will be introducing also what will be called Alliance Raids. Battles in instances that can support a high number of players for example 50 or more. This number isn't decided yet.
Such ideas were experimented with during the design of the Factions campaign, you may remember the Unwaking Waters Mission and the 2 group battle against Kuunavang. It was proven the GW1 wouldn't support this feature well enough on a large scale without rewriting too many aspects of the game. This among with many other points that would be wanted changed in retrospect lead towards the conclusion of GW2 as the best answer to solving the great many issues plaguing the dev. team.
Welcome to one of the first hints of what will be to come in GW2.
Matty ^_^
M
