The Honor Band 6 is available to buy from some online platforms, albeit as the Chinese variant with or without NFC. However, the new fitness tracker's global SKU is now slated to become available. This release will start with a listing on AliExpress from March 28, 2021, with those on the OEM's own regional stores to follow.
https://www.notebookcheck.net/The-Honor-Band-6-global-release-is-imminent-starting-on-AliExpress-later-in-March-2021.529152.0.html