There's also the 2020/21 New Year's Eve teaser tweet from the Elder Scrolls account to consider, although we reckon that's actually a tease for something else, sadly - but you can read what we made of it in (great) depth via that link.
It's important to note, however, that Bethesda was acquired by Microsoft, announced on Monday 21st September 2020, and, currently, we don't know if this has had any affect on the development of Elder Scrolls 6.
