This just in from the overgrowth development log.
This video shows Wolfire demoing their awesome game OVergrowth's new fighting system. Currently; it's a system ported from this game's antecedent Lugaru and partly modified.
Hell if that seems to matter, though! This system is already quite sleek. At about 0:30 you can see a nice combination of a sweeping attack and a roll that just screams emergent move combos (ie: not button presses, but actual combination of actions.)
I for one welcome our new rabbit overlords.