Gamespot has an article of the subject that may clear things up.
"As Sony was publicly touting Little Big Planet's launch stateside, the game's developer was helping to hype it in the UK. Along with Microsoft-owned Lionhead Studios (Fable II), Sony-supported Media Molecule was the subject of a BBC report about the solid state of British game development. During the course of the interview, which outlined Sony's plans to expand Little Big Planet into "comics, cartoons, and action figures," someone told the broadcasting service that the studio is "already at work on a sequel." It was unclear if the report was referring to a full-fledged PS3 follow-up or the PSP LBP game revealed by a job listing last month. Requests for comment sent to Sony had not been returned as of press time."
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