Remote Play is a feature on the PlayStation Vita that allows for PS3 games to stream to the Vita to be played anywhere with a WiFi connection. However, it's been almost entirely unsupported—in typical Sony fashion—until now.
Both the ICO and Shadow of the Colossus Collection and the God of War Collection have been patched to allow Remote Play access from a connected PlayStation Vita. You must first set up Remote Play, pairing the PlayStation Vita with your PS3.
It's an expensive way to play these games on the go, but if you already own both a PS3 and Vita—and either of these collections—then you might as well take advantage of the opportunity.
The main news that I think one can take from this, is more that Sony may finally be coming around to support the Vita with features that were promised even before it launched—features like Remote Play and the recently added PSOne Classic support.
Killzone 3, one of the first titles shown using the Vita's Remote Play feature, to this day still has yet to be patched to support it.
Let's hope Sony continues to patch PS3 games that allow for Remote Play on the Vita.