The HDMI Forum announced the HDMI 2.1 Specification in November 2017 and the Compliance Test Specification was revealed in August 2018. However, it’s not too early to start thinking about introducing HDMI 2.1 into you’re A/V configuration. HDMI 2.1, bandwidth and screen resolutionThe major—but far from the only—benefit of HDMI 2.1 is a huge increase in bandwidth. HDMI 2.1 supports 48 Gbps (Gigabits per second) compared to HDMI 2.0’s 18 Gbps. With HDMI 2.1, you won’t have to worry about which version of HDR your content is using because HDMI 2.1 supports all of them.

Source: Forbes January 19, 2019 12:00 UTC