Sega has released a new teaser called "Guess Who's Back?" The trailer states that the "next Dreamcast game" coming to Xbox Live Arcade and PlayStation network will be coming soon - and then showed off the classic Jet Set Radio icon.
Jet Set Radio (called Jet Grind Radio in North America) was first released for the Dreamcast late in 2000. The sequel, Jet Set Radio Future, was an Xbox exclusive that was released in 2002. Both games are best known for their graffiti-marking skaters and the catchy soundtrack mixes and mashups.