Not to be rude, but really? You hope they add more with patches? Why wouldn't they? Are we going to spend the whole expac wandering Draenor, with 3 full raids?
We know of 2 confirmed raids for the first tier, and atleast 1 other raid later, the Shattrath Raid, we do not know what the other raids will be but I suspect, if they keep up the style of MoP it will go as follows.
More than likely this will be the setup, although it would not surprise me to see it change. The shattrath raid, for instance, does not fit into this outlook, unless it is somehow controlled by Ogres, which makes no sense. But I am questioning the redundancy of this thread OP, we already knew this, unless of course you just found out, in that case good for you, start riding the hype!
One of those raids is 10 bosses rich with a non-linear lay out, fighting Warlord Blackhand, baddest of the baddest orc clan.
As long as it doesn't look too similair too SoO, you'll be pleased, sir.