In the US, it's open for unlicensed use for very low power devices. That is, it's open for WiFi. It's used by WiFi 6E, 7, and 8.
https://www.fcc.gov/document/fcc-opens-entire-6-ghz-band-ver...
https://www.fcc.gov/document/fcc-opens-entire-6-ghz-band-ver...
https://publicknowledge.org/ted-cruz-wants-to-sell-your-wi-f...