Augmentation, currently labeled just as "Damage", I think this role may end up with specific 4th role specification. Role "Damage" is the closest so far as it will cover Damage slot in Dungeon Finder + his goal is to achieve team's higher damage dealt output, but gameplaywise it seems more similar to Healer role.
If this concept will be successful and popular, then there will be a need to add more specs of this role, even if it won't be mandatory. Then being locked only to one class (and race) won't be enough for a longer timeframe. That's why I think that 4th spec thing that people like to speculate are now more possible then ever. Previously I wasn't fan of it as "third damage" or giving tank for everybody who don't have it would make class fantasy less unique (which is happening a bit due to race restrictions changes) and dilute them even more. Currently I may welcome this idea if potential 4th specs would be this new "Offensive Support" role. As a shaman main I think I could welcome 4th earth-themed spec as such support more then a tank.
What do you think about it? Which classes could receive such a role. How much we would need them? Surely less then any other, but I think future could give us more then just Augmentation.