I find it to be a mid point between the uberstreamlined FAE and the almost overcrunchiness of DFRPG. So FAE, but with peanuts and rice, for that crunchy feel. Like there are way more stress boxes than in FAE, but more interplay than in DFRPG. They also changed consequences and how stress works, along with other bits.
Like, one of the FAE bits they went with was Approaches instead of Skills. So instead of a list of 25(ish) skills, you have 6 Approaches (Flavored for Dresden) which everyone has, but at different ranks. Then you have stunts that boost those, as you might well except.
There is this new thing called Scale, which I feel was dearly needed in Fate in general. The Scale here runs Mundane -> Supernatural -> Otherworldly -> Legendary -> Godlike. There higher something is on the scale, the more bonuses they get when opposing something lower down the ladder. So even though Average Joe and Vampire have Haste at +2, the two are operating on two totally different level. Vampire is going to catch you, Joe. And you don't try to out magic Mab in Winter. Like, period.
If you want specifics, I can dig them up and lay them out.