According to the e-mail, the port will hit stores in March, about a year after the title debuted on PSP. Size Matters marked the first Ratchet & Clank title to be developed outside of Insomniac Games, which created the franchise.
It also marked the first title for High Impact Games, the staff of which includes several ex-Insomniac employees as well as veterans from Jak & Daxter developer Naughty Dog. The studio is currently working on another portable Ratchet & Clank title, Secret Agent Clank (PSP).
PSP to PS2 ports have been all the rage these days, and rumors of marquee PSP releases making the leap to the PS2 are frequently tossed around. Fortunately for Ratchet and Clank fans, this one turned out to be true. Expect an official announcement from SCEA in the near future.