I have to say: why hasn’t someone done this before? I can see Panasonic selling a lot of these TVs on the basis of that feature alone.
The EX600 series are also 4K models, also with HDR support and smart functions. They come in sizes from 43 inches to 65 inches, priced from $1799 to $3299.
Panasonic made an astounding claim during its presentation. In the US more UltraHD Blu-ray discs were, it says, sold in 2016 than regular Blu-ray discs. I’m not sure if that’s indicating so much enormous acceptance of UHD as showing a collapse in the sale of Blu-ray discs. Perhaps a bit of both.
UPDATE: It turns out that what Panasonic was really saying is that uptake of UHD in the US in 2016 was faster than it was for Blu-ray when it was introduced a decade earlier.
Anyway, Panasonic is introducing two lower cost UltraHD Blu-ray players in June to go with its premium DMP-UB900. The DMP-UB300 will sell for $449 and provides all the functionality that you need, plus some smart functions. The DMP-UB400 looks nicer, has two HDMI outputs (in case your audio system can’t handle the UltraHD video), and includes WiFi.
Panasonic also teased the DMR-UBT1, to be released in September, price as yet unknown. This will be combine HD digital TV receiver and recorder with a 2 terabyte hard disk, UltraHD Blu-ray player, and the ability to burn TV broadcasts to recordable Blu-ray discs.