It turns out that Zenimax and Bethesda trademarked the term Redfall on 10 September 2018 and try as we might, we cannot think of anything that Redfall would go better with than The Elder Scrolls, specifically the upcoming instalment.
Note that this is where the information train stops, because a lonesome trademark filing is all there is to support hopes and dreams of weary fans of The Elder Scrolls franchise.
In these dark days when Bethesda seems to be more keen on Fallout 76 bombardment than sharing their progress with their devoted legions who keep faithfully purchasing Skyrim so as to keep Todd happy, it may be all they're left to go by. Heck, the company probably sold so much that it made Skyrims a useable plural form.
Jokes aside, even though Redfall sounds like an ideal match for a new instalment in the franchise, it's still no guarantee. Hopefully Bethesda clarify this in the coming days, although I'm not so certain they will. After all, these things are traditionally best left out in the open, if nothing else then just to see what happens. Well, for devs at least.
While we were on the subject of The Elder Scrolls V: Skyrim, it's important to note that it too was at the time trademarked as simply Skyrim. It wouldn't be inconceivable to see Redfall follow in its footsteps, especially since proper work on Skyrim closely followed the launch of Fallout 3. The new Scrolls are still in early development, so it's likely that we won't see it in full swing until Fallout 76 has launched.
There's also a possibility of a brand new title, which is what happened with Starfield, Bethesda's mysterious title that Todd says has been in and out of development for a decade or so. However, that would mean that Bethesda will be announcing yet another game, which isn't very likely at the moment.
All in all, we really hope Bethesda throws us a bone here, and that goes as much for The Elder Scrolls VI as for Starfield.