Pioneer Japan, announced that after co-operating with TDK, the developement of a new composition for the recording layer that permits 2X writing with Blu-Ray discs! The compatibility is expected to kept at the same levels of 1X writing...By the time Blu-Ray hits the market, this new technology should have been finalized and available for users.

Both companies plan to show this new technology at the Internation "ISOM/ODS2002" that will held from 7-11th of July on the U.S. Hawaii island (the State of Hawaii)

Specifications:
Storage capacity: 23.3/25 GB (dropped 27GB plans..)
Laser wavelength: 405 Nm (Purple-blue Color Laser)
The number of lens openings (NA): 0.85
Data transmission rate: 36 (1X) and 72 (2X) Mbps
Disk diameter: 120 mm
Disk: 1.2 Mm (with Optical Penetration Protection of 0.1 Mm)
Track system: Groove record
Track pitch: 0.32 MuM
Pit length: 0.16 /0.149 MuM
Record side density: 16.8 / 18.0 Gbit/inch 2
Record power: 4.5~6.0 mW