Just saw the official art of this today. I'm stoked about the updated character designs, i.e. how they're not just taller versions of their middle school selves with slightly longer hair. I mean, Saki is practically unrecognizable, and has grown out of her trademark eyebrows. Rin was also hard to recognize, as she seems to have grown a lot more feminine over the years.
Other than that, I'm also excited at the prospect of this being a crossover series involving 2 (or more) Precure teams. Hopefully though, they don't go crazy with a full Precure All-stars, as too many characters would dilute the potential for character development.