LinkedIn page. Discovered by PlayStation LifeStyle, the resume of Haroon Piracha lists Ratchet & Clank: Size Matters, Secret Agent Clank and "UNANNOUNCED TITLE (PSP)." A next-gen listing is also on the resume.
Considering the developer's history, it would be unsurprising if High Impact was working on a new Ratchet game. However, we're hoping for something new. A different PlayStation franchise we'd love to see back on the handheld: Sly Cooper, perhaps?