Panasonic's 4K TV uses Firefox OS, a browser-based operating system, to offer apps and configuration options. It's the first device that's part of Mozilla's attempt to branch out beyond PCs and smartphones. The 4K (aka Ultra HD) TV will ship this spring.
The main screen visible when you turn on Panasonic's 4K TV shows a user-configurable list of icons to launch various stations or services. Panasonic announced the TV at CES in January but showed it at Mobile World Congress two months later.