I managed to squeeze in a few matches in the beta (while I could actually figure out when the beta was available on Steam). It feels much more educational and less of a wall of difficulty than what Street Fighter IV was like - each match I play feels like I'm learning on my own, which is more than can be said for a lot of fighting games (including SFIV)
For me it's back to basics: Ryu is a great starting point for me to freshen up on the real fundamentals of fighters. Spacing, footsies, mix-ups and cross-ups are my number one focus on unlearning my bad habits, and I think maining Ryu for a while will be the best way to do that. Re: one of my earlier posts, inputs feel a lot more forgiving. I'm glad execution precision and difficulty is being lightened up in favour of the actual mind games and planning, which is really the more interesting half of fighters.
That said, I'm hoping they implement a proper fundamentals tutorial since any fighting game worth its salt these days (since Skullgirls) has made an effort to fit one in.
It also looks much, much nicer.