Sony will announce next month that it developed an 8-layer version of the Blu-ray Disc that is capable of storing 200GB of data, according to a company spokesperson. Advertisement The announcement will be made at the International Symposium on Optical Memory 2004, which takes from October 11 to October 15, in Jeju Island, South Korea, according to Sony. The company further plans to commercialize a 4-layer 100GB version in 2007, says Sony spokesperson Taro Takamine.