We saw some screens of this early Mighty No. 9 build a little while back, but now you can actually see it in action. The above short clip comes from Keiji Inafune's D.I.C.E. 2014 expo presentation. It's looking pretty spiffy so far. Nothing is set in stone, though; these assets and mechanics are subject to change over the course of development.
Thanks for the tip, Heat Man!