Well, new to him at any rate. Capcom has released two gameplay trailers for Tokyo Game Show which have a focus on moves that Spencer can perform with his bionic arm in the upcoming Bionic Commando ReArmed 2. A couple of them, such as a circular whip motion and ground pound, will probably be familiar to those who played the 3D Bionic Commando from last year.
A really useful move is shown quite a bit in the second video below. Spencer can apparently just plow barrels out of the way with his robo-fist instead of having to pick them up and throw them if they're in his path. It's really cool. The only thing I'll warn you about is that this second trailer has one of the most painful re-interpretations of the Bionic Commando theme I've ever heard. Headache-inducing, even.