According to a report in Computer & Videogames, House of the Dead: Overkill Extended Cut for the PlayStation 3 has been refused classification in Australia, even though an R18+ rating has been agreed upon "in principle" and will inevitably be launched in the country later this year. The Australian Classification Board updated its website this week to include a listing for the game, but noted that the version of the game was outside of the MA15+ rating given to the older Wii version.
A game refused classification in Australia means it is effectively banned and not available in stores. The Wii version of the game released in 2008 was granted an MA15+ rating in Australia. Apparently the "extended" elements in Sega's updated version of the game - including two new scenarios - may have something to do with. The game also promises high definition graphics and PlayStation Move support.
Thanks to Cheater87 for the tip.