TDK has begun mass producing some of the first raw Blu-Ray discs to see the light of day. Starting with 25GB and 50GB capacities, in both write-once and rewriteable form, the cartridge-less discs are the first 2X capable media of this type ever produced and are the finishing touch on a prototype demoed earlier this year. The 25GB capacity discs are single-layer, the 50GB are double-layer, and both are single-sided, bringing perhaps potential for much larger capacities in the near future. Don't expect to be buying these up in the store, as neither the devices nor the media themselves are commercially available as of yet, but release is coming ever closer. You can read the full press released here
at TDK's website.