According to a report from Joystiq, Sony has already put in an order for a sequel to the PSP blockbuster, a game that could make an appearance in announcement form at this year's E3. That's according to the site's "trusted source," which puts Ready At Dawn back on PSP development as of "late 2008."
While Ready At Dawn reps opted not to confirm the rumor, it would certainly make a lot of sense. The Irvine, California based dev certainly knows its way around a UMD.
After "moving on" from PSP development last year, the Chains of Olympus developer looked to have a change of heart, if only for its successes on the platform.