Who is this person in the Doctor Who trailer released on 23rd October 2022?

My family are convinced it's Matt Smith/Eleventh Doctor, and it looks like him to me too.

But as I can't find anything about it on the internet I assume it probably isn't. (Assuming that if it is Matt Smith it'd be all over the internet by now.)

So, is this Matt Smith/11th, and if not do we know who it is - either actor or character?