Well it's about bloody time! Apple is starting to add web previews for tvOS apps; it's not a huge step, but it’s a move in the right direction.
When tvOS launched last year, it had limited functionality; you couldn’t link to apps directly, which made it difficult for app developers to link their apps from websites or social media.
Currently, it seems like only a handful of native apps have been rolled out, but MacStories spoke to Kevin MacLeod of AfterPad, who confirmed that while the iTunes API is now returning screenshot metadata, that metadata is missing on the iOS platform with tvOS support.
You can have a look for yourself
I'll keep you posted if anything further develops.