Today Japanese blogs (like this) are spreading the rumor about a port of two legendary Shooting games from Cave: DoDonPachi DaiOuJou and Ketsui. It's still just a rumor  (I never heard anything about this during the Cave Festival 2007 I visited last december) but it's pretty credible since Ketsu is being ported to DS and the Microsoft console is considered by many Japanese producer a good (and reasonable) chance to get into the western market without spending huge money to pay Sony license.

UPDATE: Brandon on Insert Credit: This is now confirmed Famitsu, and they're coming this year. Huzzah! The ports are being done by 5pb who we made fun of just a few days ago. Generally a Galget maker, the Famitsu article says they've been 'hard at work' on arcade properties as well, so we shouldn't be worried. That's what they say anyway. The producer is Masaki Sakari, whoever that is...