Tod Howard recently confirmed that TES VI is still in pre-production, despite originally teasing the game at E3 2018: https://www.ign.com/articles/todd-howard-bethesda-fallout-5-elder-scrolls-6-starfield?utm_source=twitter

Will resolve to YES if the game is available for members of the public to purchase, download and play on any major console/platform, before January 1st 2027. Will resolve to NO if the game is only available as part of a "public beta" or similar.

If the game does not explicitly contain "The Elder Scrolls VI" in its title, I will resolve at my discretion whether it is still The Elder Scrolls VI de facto.