Just got out of my advanced screening. Enjoyed it, but I feel like it needed more character work. For me, without that (and a bit of a break from the suspense, which for me became a bit mind numbing in the second act) it lacks a certain punch.
First and third act land really well, though. A lot of great scenes/sequences... Not sure how much I can say without getting into spoilers, plus I'm still processing.
EDIT: I'll do some random thoughts.
The cast was terrific. Tom Hardy, Kenneth Brannagh in particular. One great moment with Rylance. Harry availed himself very well (as did the seven early teen fangirls sitting in the row in front of me, who were damn near jumping out of their skins before the movie started). He might've even been my favourite of the younger/new cast.
Cinematography and music are 10/10 (though the heaviness of the IMAX cameras rob Nolan of some of the quick energy I loved in his stuff from TDKR and earlier). The opening sequence is great in instilling its sense of dread, as is the last in its sense of bittersweet hope.
Not sure what I'd rate it yet. But due to the second act growing a bit dull for me, and the lack of more traditional character stuff, I didn't have the visceral "F*** yeah" gut reaction I had all through TDKT, The Prestige, Memento etc.