New Unit:Warhound

WarhoundDescription: The Warhound is a small, walking ground mech that wields an effective anti-air weapon with splash damage, much like the Thor from Wings of Liberty. The difference is that the Warhound is smaller and much more nimble, though it gives up some range on its anti-air missiles in exchange for this mobility. The Warhound also wields a small ground attack weapon that does additional damage to mechanical units, making it particularly well suited to taking out enemy Siege Tanks — though it’s not particularly effective against non-mechanical units.

http://www.youtube.com/watch?v=H3Bh6UBQ1Y8