Found this:
Game Info
Developer : Compile Heart
Publisher : SEGA
Platform : PlayStation 3 [PS3]
Genre : RPG
Release Date : Japan Summer 2010 / International TBA 2010
Official Site Link
1. Takes place in the fictional world called Geimugyokai (Game industry)
2. Geimugyokai is split into 4 different worlds with 4 different goddesses
3. The four worlds are Platetume, Rinbox (360), Lasdition (PS3?), Ruwii (Wii)
4. The four goddesses are Purple Heart (Neptune), Green Heart, Black Heart, White Heart
5. Battles are in 3D
6. Game companies are represented by characters in the game too (Gust, Nippon ichi etc)
7. Able to summon guardian angels from actual games or from pictures in the PS3 photo album
8. Possible to customize appearances and combos
9. Neptune and others work together to beat the evil goddess "Majekonnu" (Majikon is the term used to refer to DS flash carts like R4 etc)
That's the code name for Compile Heart's new project, which just got a teaser countdown site that will reach 0 on Friday. Famitsu reveals the game's full name to be "Choujigen Game Neptune."
Choujigen Game Neptune is a PS3 RPG that's set in the virtual world of "Game Gyoukai." That's Japanese for "Game Industry." Main character Neptune must stop the evil plot of Goddess Magicon.
Oh, I forgot to mention that the characters in Neptune, including Neptune himself, are game consoles. Also, Sega is partnering with Compile Heart for the sales side of the game.
So, we have Sega selling a game about a console named Neptune fighting the Goddess Magicon. Not only that, but the game will have appearances by Sega characters. The game will also have its own version of well-known game industry entities like Capcom, Gust and Nippon Ichi -- all presumably unofficial, of course.
And here's the best part. Apparently, the consoles can transform into bishojo. What this will be used for is unclear at present.
Main Characters
Neptune - Player
PlayStation 3 - Black Heart
Wii - White Heart
Xbox360 - Greenheart
other characters (based on developers)
From Left to right
First...Idea Factory (look at the belt, IF logo)
Second...GUST (alchemy)
Third...Compile Heart (Compile Heart logo)
Fourth...NIS (prinny)