Apparently, DDRMAX USA did so well that Konami of America is following up with a sequel only a few months after DDRMAX's release.
http://www.konami.com/usa/releases_gamers.shtml#DDRMAX2 Dance Dance Revolution™
Release date: Fall 2003
Genre: Music
Platform: Sony PlayStation® 2
Get your dancing shoes on and pump up the volume! Konami's dancing revolution rolls on with the release of DDRMAX2™ for Sony PlayStation® 2. Now offering players a whole new library of unforgettable licensed and exclusive songs for the U.S., DDRMAX2 includes all-new high-energy play modes and an enhanced interface. Players will still have to stay on their toes as all of the standard game modes and the ever-challenging Workout Mode return!
Haters can say what they want, DDR is not going away anytime soon, and with DDR Extreme just released in Japanese arcades there is no indication of it slowing down. DDRMAX2 shouold be avalable for the PS2 in Fall 2003.