My daughter downloaded the demo for Halo Wars a few days ago, and I spent a few hours playing it recently. It's from Ensemble, responsible for the "Age of <X>" (Empires I, II, III, and Kings), and it's similar enough that I've named it "Age of Halo".

It's a pretty standard approach - build buildings, do research, train fighters, though there are some interesting constraints they've imposed this time around that I think will make the gameplay a bit different.

I'm definitely going to pick it up when it comes out on March 3rd.