https://www.techradar.com/news/google-could-be-about-to-reveal-a-4k-android-tv-dongle

Google could be releasing a 4K Android TV dongle at its upcoming I/O conference, now less than a month away.

An application filed with the US Federal Communications commission (FCC) has revealed that a 4K Android TV dongle is on the way. The only question is whether it’s an official Google product.