Japanese Sonic Gems coming with bonus games

It seems that Sonic the Hedgehog fans who purchase the upcoming series compilation will be getting more than what they pay for. According to retail sources in Japan, Sonic Gems Collection will include four games as bonuses: Streets of Rage, Streets of Rage II, Streets of Rage III, and Bonanza Brothers. The four games appeared on the Sega Genesis between 1990 and 1994. There's no word on whether the bonus games will ship with the stateside release, due in August.