We still don't have a release window

Corroborated by 2 sources from 2 publishers

usgeneral4h ago

TL;DR

The Verge (Tech)

https://www.theverge.com/news/1025273/the-elder-scrolls-vi-sentinel-name-announcement

Engadget

https://www.engadget.com/2305424/the-next-elder-scrolls-game-is-officially-called-sentinel