Nintendo has confirmed to VG247 today that more American DSi release software is to be announced "closer to launch".
The only launch title confirmed so far is Rhythm Heaven, the tap and slide music game that's sold more than 1.6 million copies in Japan.
Rhythm Nation will debut priced at $34.99.
VG247 understands that there may be an announcement on launch software at GDC at the end of March.
DSi will launch in American on April 5. The machine releases in Europe two days earlier, on April 3.