DECO*27 is releasing a new single called "Yume Yume". It's the theme song for Nintendo 3DS game "Hatsune Miku and Future Stars Project mirai".
It goes on sale 4/18. The limited edition comes with a Yume Yume Miku rubber strap.

[Limited Edition]
Catalog Code: MHCL-2340~2342　
Price: 2,100 Yen
http://www.amazon.co.jp/dp/B0070YG1HK/
Comes with a Yume Yume Miku rubber strap

[Standard Edition]
Catalog Code: MHCL-2343~2344　
Price: 1,575 Yen
http://www.amazon.co.jp/dp/B0070YG1PC/

[Track List]
CD:
1. Yume Yume
2. Yume Yume (Instrumental)
3. Yume Yume (sasakure.UK ElectricSheep Remix)
4. Nisoku Hokou (fha'na Quantum Remix)
5. Ai Kotoba (i-dep 2467 Remix)

DVD:
1. Yume Yume (Hatsune Miku and Future Stars Project mirai Opening Movie)
2. Yume Yume (Animated Music Video)

info source: http://www.musicman-net.com/artist/15529.html