Not really. The primary reason is because the games are too easily bootlegged, so developing new titles for the hardware is generally a losing proposition. As soon as a game is released, it's immediately dumped and bootleg copies make their way around the world.
[url]http://www.racketboy.com/retro/sega/dreamcast/2008/05/dux-new-dreamcast-shmup-game.html[/url] said:HeavyMetalMe:What’s on the agenda for NG: Dev.Team and HUCAST.net after DUX? Will you continue making games for both NeoGeo and Dreamcast?
René: Indeed. With NG: DEV.TEAM a vertical scrolling shooter will be ready next year. With HUCAST.net I’m currently completely occupied with DUX so time will tell.
So basically there is going to be a vertically scrolling shooter made for the AES.