Re: The Star Trek Into Darkness teaser trailer is here!
I didn't notice the Bat'leth! Cool... good continuity. Even some 22nd century Klingons ("Marauders(ENT)") carried them so there's no canon violation showing Klingons from over 100 years later using them in combat.
Human instinct is pretty strong. You can't expect us to change overnight.
-Captain Jonathan Archer, 2151