I'm not sure I like what I've seen of the Klingons in JJ-Trek so far; it seems they're going straight for the vikings of TNG, rather than the cunning Klingons of TOS.
That being said, most of the Klingons we've seen thus far (on Rura Penthe in Star Trek XI, and in Ketha in STID) have all been guards, so perhaps it isn't strange that they've been all muscle. The interrogation scene in STXI did feel a bit more ... "Kor:ish", so to speak.
I hope they take some inspiration from John M. Ford's The Final Reflection and the FASA continuity; I feel they really got the Klingons right. Marc Okrand's Klingon for the Galactic Traveler also gives some very interesting cultural insight, though more focused on TNG/DS9 Klingons.
Part of me wishes they'd base the Klingons a bit more on the Krogan from Mass Effect: you portray them as being hostile and unpleasant, not because they have any sort of imperial/conquering agenda, but just because their culture and institutions are all completely dysfunctional -- even by their
standards -- and they simply don't know what else to do with themselves.