HTML 5 dubious, quote
They're demonstrating that HTML 5 is something they've heard of. And here "HTML 5" evidently means "placing a video player in a web page".
Also that it's 300 models of TV-compatible device such as set top box OR overambitious TV set, and not 300 TV models or indeed 300 TV owners as in the dear old days at Alexandra Palace, when BBC TV could be received by a moderately large area of central London. All right, I'd be a bit surprised - a bit - if an Internet-connected product had a geographical limitation as strict as -that-.