Info from Gamespot:

Sonic Team announces plans to reveal the next game in the Sonic series at the upcoming World Hobby Fair.

Sega has announced that Sonic Team will be revealing the next game in the Sonic the Hedgehog series at the upcoming World Hobby Fair in Japan, which will be held on July 13 and 14. Unfortunately, there are currently no details regarding specific platforms. Sega also announced that Super Monkey Ball 2 will be playable at its booth and that it will also be offering a rare chao download for showgoers. We'll have more as it becomes available.

By Staff

Source: Gamespot