There are a few possibilities:
1. It takes place after Oblivion, but before The Infernal City, meaning it would be before ~4E 40
2. It takes place at some point after the unreleased second novel.
3. It takes place 200 years after Oblivion like the rumor that's been floating around since the novel was announced says.
Personally I hope it takes place 200 years after Oblivion as that would mean we'd get a hell of a lot of new lore to talk about.
Yes, sorry if I was not clear, the preview that was posted and removed of The Infernal City is by no means official.
I'm kind of apprehensive about the 200 year thing. Think about it - 200 years ago today was December 12, 1810. That's before the US Civil War, and only about thirty years after the American Revolution. The very first and very primitive airplane was built in 1803. A
lot of things change in the span of 200 years. I wouldn't mind TESV taking place 200 years after Oblivion, but I just really hope Beth doesn't see that as an excuse to include things like guns, etc.
Maybe it would include primitive fire arms :gun:
:facepalm: