It was announced by an insert in US Blu-ray copies of Battle: Los Angeles. It'll also pack $10 worth of bonus content and an exclusive Resistance 3 skin.
That same Blu-ray of Battle: Los Angeles also includes a demo for Resistance 3. An insert in the disc case proudly announced the Resistance Greatest Hits Dual Pack, which appears to at least be releasing in North America. There's no word from Sony on Europe.
Resistance: Fall of Man and Resistance 2 together for $39.99? Not bad.