Yes,its true!Sony made ANOTHER Project Diva PSP game!!Too bad I don't have a psp.. TT^TT Now,don't think that I don't have proof!Cause I do!The have it to pre-order on Play-Asia.com.OH,OH ANNDDDDD you can make them sing duets on the game~!

Here is the link to it:

http://www.play-asia.com/paOS-13-71-9f-77-1t-49-en-15-vocaloid-70-3rgn.html