SEGA have announced that both classic Dreamcast titles such as Sonic Adventure and Crazy Taxi will be released on PSN later on in the year. Both titles will have the same content as before but they will now include high resolution visuals, surround sound and trophy support. Also SEGA have confirmed that both Sonic Adventure and Crazy Taxi will be on display at this monts E3 in LA.
Thanks to vg247 for the heads up.
Click here for the forums.