I had heard about this and sort of didn't listen as I thought it was Netflix.
But it isn't. Its the BBC!
"A clash that defined a country, and a continent, for a thousand years. The epic story of 1066 and the brutal battle for a kingdom. Starring James Norton and Nikolaj Coster-Waldau."
https://www.bbc.co.uk/programmes/m0024pyz
Supposedly based on verified historical facts.
I am imagining a mash up of Game of Throne and Vikings.
(Haven't seen another thread but am nominating this as a binge watch thread, rather than tv pace. If available on iPlayer.)