Entertainment also started the early window policy, where the digital version is released through digital retailers two or three weeks before the discs, and was launched with Prometheus in September 2012. This also started Fox's Digital HD program where customers could download or stream 600 Fox films on connected devices at less than $15/film through multiple major platforms. However, Digital HD was soon dropped as 4K, or Ultra HD, was introduced in 2012. In 2014, a high-tech think tank, Fox Innovation Lab, was formed under 20th Century Fox Home Entertainment. In September 2015, the first Ultra HD Blu-ray player was introduced, leading TCFHE to have future movies released the same day in Ultra HD Blu-ray as regular Blu-ray and DVD. The first Ultra HD Blu-ray films were released in March 2016, with Fox being one of four studios involved; Fox had had the most titles with 10. Dunn added another title in December 2016: president of product strategy and consumer business development. Dunn turned over TCFHE in March 2017 to Keith Feldman taking over his older title, president of worldwide home entertainment. Feldman was previously president of worldwide home entertainment distribution, and, before that, president of international. 20th Century Home Entertainment International 20th Century Home Entertainment International (also known as 20th Century Studios Home Entertainment International) was the International distribution arm of 20th Century Studios Home Entertainment and its animation division. They released VHS tapes from 1981-2006, DVDs since 1998, and Blu-Rays since 2006. The name was retired on 14 April 2020, and it is succeeded by 20th Century Studios Home Entertainment. In DVDs had a Warner Home Video Authoring pre-2004, In Blu-ray Discs had a Sony Pictures Home Entertainment similar Authoring. Fox DVD Video Fox DVD Video was a brand for DVDs released by 20th Century Fox Home Entertainment. 20th Century Studios Home Entertainment (Disney acquisition) In December 2017, the acquisition of 21st Century Fox by Disney was proposed. After a Comcast bid and Disney counter bid approval was given. Disney took over most of 21st Century Fox on March 20, 2019. On January 17, 2020, it was announced that the "Fox" name would be dropped from several of the Fox assets acquired by Disney, and the film unit would be renamed 20th Century Studios. However, the renaming of 20th Century Fox Television (became 20th Television), Fox 21 Television Studios (became Touchstone Television), Fox VFX Lab, 20th Century Fox