Is this first gameplay footage of Homefront 2?, Yes it is. The footage is taken from early build of Homefront 2 which is currently in development at Crytek.
Take a look at the footage below, you can see proper Homefront 2 gameplay from 6:50 mark. Apart from Crytek as developer nothing has been confirmed about Homefront 2 not also the platforms on which it will arrive.
With GamesCom 2013 just around the corner, we expect to hear something official.