Blu-ray Proposes Incompatible BD-XL and IH-BD Formats

The Blu-ray Disc Association announced upcoming specifications for high-capacity write-once and rewritable discs. The BDA proposed two new formats, BDXL, the name given to new 100GB and 128GB discs; and IH-BD, a so-called 'Intra-Hybrid' disc that will incorporate both read-only and rewritable layers. Specifications for both disc types will be published during the upcoming months. Both formats will be incompatible with existing hardware; however, new players designed to take advantage of the new formats will be able to play back existing Blu-ray discs, which are available in both 25 and 50GB capacity points

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