Royce Da 5 9 said:
Yes (in Japan).
Trizeal was just recently released (back in April) and Senko No Ronde (by G-Rev of Border Down fame) is scheduled for DC release later this year (this was in an interview with the design team... since the arcade version still hasn't officially been released, an "official" release date for the DC rev has not yet been announced).
Radirugi (by MileStone, who released Chaos Field on the DC back in December of 2004) will also most likely see a DC port this year, given the company's track-record. That just leaves G-Rev's newest shmup, Under Defeat (which, like all the prior games in this response, is running on NAOMI arcade hardware)... which might just get a 2006 DC release.