HDMI 2.0 offers some new features that were not available with the HDMI 1.4 standard, including the following:
4K resolution (4096x2160) at 60 Hz
21:9 aspect ratio support
Four audio streams
High-bandwidth Digital Content Protection (HDCP) version 2.2
Although HDMI 2.0 is backwards compatible with older HDMI standards, newer HDMI devices need to support HDCP 2.2 in order to display new content. If you use an HDMI device that only supports HDCP 2.0, an error will be displayed when you try to display content that has HDCP 2.2.