Warhawk expansion will be called Operation Broken Mirror. It should hit the European PlayStation Store sometime next month (April 2008). It should be coming after the v1.3 patch releasing on April 2, 2008.
The new expansion comes with a new level, known as Vaporfield Galcier, and the Armored Personnel Carrier. The APC comes in two different forms and looks different for the Eucadian and Chernovan classes. Up to six players can ride in one, and a speed-boost feature will allow it to better enter enemy territory. The APC can also generate a force field to protect your troops.
Operation Broken Mirror will be priced at £3.99 in the UK, and we've yet to receive a price on the US dollars. For now, enjoy the screenshots. [PS3Fanboy]