Yes, it has been officially confirmed that Kin’iro no Corda 3 is set to be released in Spring 2010 for both the Playstation Portable and Playstation 2 console.
There will be released in 2 editions, a Treasure and Premium respectively. The retail price would be ¥5,800, (¥6,090 including taxes). Further information as they come~ I’ve omitted some things until they could be officially confirmed.
You can find the official website for Corda 3 here!