The twelfth game in the series will be exclusive to Nintendo's online store.
Recently, Konami announced via their official Japanese website that a brand new entry in the Contra series will be released for WiiWare under the title Contra: Rebirth.
Contra is a run-and-gun shooting arcade game in which players control a commando fighting waves of enemies. The 1987 original was first ported to the NES and made famous by its simultaneous co-operative play. The last sequel in the main series to appear on a Nintendo console was Contra III: The Alien Wars on the SNES in 1992.
Contra: Rebirth will feature updated 2D visuals, and retain the classic co-operative gameplay that made the original famous.
Contra : Rebirth will cost 1000 Nintendo Points and will be available via the Japanese Wii Shop Channel on May 12.
Currently there is no word on release outside of Japan.