At IFA 2015, Samsung announced that its 2015 SUHD and UHD TVs will be “the first on the market capable of supporting the new HDMI 2.0a specification”. HDMI 2.0a is required to receive 4K HDR movies from players such as those based on the new Ultra HD Blu-ray standard.

HDMI 2.0a for all 2015 UHD TVs
Some TVs are already capable of streaming 4K HDR content from Amazon Prime Video but if you want to connect an external player such as one of the new Ultra HD Blu-ray players you need to connect it through an HDMI 2.0a port. The “a” in HDMI was announced in April 2015 and is required for HDR support.

- “Samsung will issue a firmware update that will enable its 2015 SUHD and UHD TVs to display a broader library of High Dynamic Range (HDR) content now from external devices. HDR delivers a much higher level of contrast between light and dark to produce an image that is more realistic and closer to what the content creator imagined. The firmware update is available now at no additional cost to owners of 2015 Samsung SUHD and UHD TV’s.” wrote Samsung 


This also means that Samsung’s “regular” Ultra HD TVs will be capable of reading HDR content. Sony also announced at IFA that it will add HDR support to its entire 2015 Ultra HD TV line-up.

- “Samsung provides cutting-edge technology that our consumers expect from an industry leader, and our SUHD TV’s are our best ever” said John Ryu, vice president of the visual display business at Samsung Electronics. 
- “While our 2015 SUHD and UHD TV lines are already capable of delivering HDR capability from internal sources such as streaming services, this firmware update will enlarge the spectrum of available HDR content for our customers.”

HDMI 2.0a will be supported by all 2015 SUHD and UHD TVs via a firmware update, says Samsung. You can use your existing HDMI cables.