This news adds additional substance to early rumors and leaked screenshots of said Sega titles. Korea, even more so than Japan, misses out on Xbox Live Arcade games. So, if South Korea is getting Crazy Taxi and Sonic Adventure they are pretty much a lock for the rest of the world.
All that’s left is for Microsoft or Sega to properly announce them. That’s probably going to happen soon if After Burner Climax is any indicator.