16-layers -- that's how many layers it takes to the hit the center of a 400GB Blu-ray disc, pops. That's 25GB per layer just like those dual-layer 50GB discs available for retail. Best of all, the technique used by Pioneer is expected to be backward compatible with existing Blu-ray gear since the specs and lenses required for pickup are identical. The prototype is read-only for the moment but R&D's on it so let's give them some time to work it out.
http://64.233.179.104/translate_c?hl...D_-k4zoE7g4GIw