Six discs containing all music from the original to Climax, as well as all ports, going as far as to include cellphone conversions and even tracks from the version included in the GBA Sega Arcade Gallery compilation which was not released in Japan. Full track listing and order page at Sega Direct:
http://segadirect.jp/Catalog/CustomPage ... 0th_cd.htm
Comes out November 29th for 9,240 yen including tax.
A bit overkill I think... but I would still snap it up if I didn't have better uses for my yen right now. Perhaps one day!
