In January 2007, Hitachi showcased a 100 GB Blu-ray Disc, consisting of four layers containing 25 GB each.[78] Unlike TDK and Panasonic's 100 GB discs, they claim this disc is readable on standard Blu-ray Disc drives that are currently in circulation, and it is believed that a firmware update is the only requirement to make it readable to current players and drives.[79] In December 2008, Pioneer Corporation unveiled a 400 GB Blu-ray Disc (containing 16 data layers, 25 GB each) that will be compatible with current players after a firmware update. Its planned launch is in the 200910 time frame for ROM and 201013 for rewritable discs. Ongoing development is underway to create a 1 TB Blu-ray Disc as soon as 2013.[80]
On July 20, 2010, the research team of Sony and Japanese Tohoku University announced the joint development of a blue-violet laser,[82] which will help in creating Blu-ray discs with a capacity of 1 TB using only two layers (and potentially more than 1 TB with additional layering). By comparison, the first blue laser was invented in 1996, with the first prototype discs coming four years later.
On January 7, 2013, Sony announced that it would release "Mastered in 4K" Blu-ray Disc titles which are sourced at 4K and encoded at 1080p.[83] "Mastered in 4K" Blu-ray Disc titles can be played on existing Blu-ray Disc players and will have a larger color space using xvYCC.[83][84] On January 14, 2013, Blu-ray Disc Association president, Andy Parsons, stated that a task force was created three months prior to conduct a study concerning an extension to the Blu-ray Disc specification that would add the ability to contain 4K Ultra HD video.[85][86]
On August 5, 2015, The Blu-ray Disc Association (BDA) announced it will commence licensing the Ultra HD Blu-ray format starting August 24, 2015. The Ultra HD Blu-ray format will deliver high dynamic range content that significantly expands the range between the brightest and darkest elements, expanded color range, high frame rate (up to 60p) and up-to 3840x2160 resolution, object-based sound formats, and an optional "digital bridge" feature. New players will be required to play this format, which will be able to play both DVDs, traditional Blu-rays and the new format. New Ultra HD Blu-ray discs hold up to 66 GB and 100 GB of data on dual and triple layer discs respectively.[87]