"NEWS 'Hatsune Miku -Project Diva- 2nd' and THE IDOLM@STER SP Colaboration!"
"There will be a Idolmaster SP stage"
The Primary Star Plum will be avaliable as DLC
Uhm.. They costume is star plum if you have never played IDOLM@STER before. Miku will have Haruka's costume, Rin (No mention of Kagamine Len) will have Ami and Mamis costume and Luka has Chihaya's costume. Two IDOLM@STER SP songs are to be in the game (Not announced yet).
Source..? The scan is the source itself.
Thanks to Uzumakijl for the translation.