From what I have read it will by Section 31 and Emperor Georgiou.
Here is what posted over at Trekmovie:
While I love Yeoh and Capt Georgiou, I don’t like Emperor Georgiou. While the idea of Section 31 is “kewl” – what the proponents of a Section 31 show forget is they are the villains! I forget what happened with them in Enterprise (cause that was not a good idea), but in DS9 the whole point of their appearances is they are the bad guys. Yeah they are pragmatists, but they are terrible and against everything the federation stands for. Sure, some elements of Discovery haven’t been perfect, but spinning off a Section 31 show is about as wrong for Trek as you can get.
I guess they could redeem it by having Georgiou come around to believe in the Federation and to undermine Section 31, but that is so unlikely to happen.
This is the first big element of revived Trek that I don’t feel I can even get partly behind. We’ll see when it is more than a rumor.