XenGamers does an interview with Yuji Naka, lots of interesting questions asked:

XenGamers: We did not see any Sonic games at E3. Will this series be continued?

Naka: I think we’re going to stop the ‘Sonic Adventure’ series at 2 for the time being. We want to do something different for the next title in the series. We are working on a number of Sonic games now, including ports of older titles. We’ll be able to announce these in the near future.

XenGamers: Will future Sonic games be platform exclusive (e.g. GameCube only, etc)?

Naka: No, we’re not thinking in those terms. There is a good chance that Sonic will appear on a number of platforms.

XenGamers: How would you respond to comments that Sonic moves too fast in a 3D environment for the players to appreciate the scenery?

Naka: The player can slow down or stop and enjoy the scenery if something grabs his/her eye. I think Sonic himself doesn’t always run full-tilt. I’m sure if he finds some nice scenery he stops to take it in. I hope players will do the same.

XenGamers: You released some Sonic sports games (such as fishing) for i-Mode cellular phones in Japan. Will you make any Sonic sports titles for the home consoles?

Naka: I get the impression that the Sonic sports games on i-Mode are pretty fun, so they may appear on other platforms. However, we aren’t actually developing any at the moment.