I'm looking forward to Sun and Moon! It's weird because I wasn't really excited for Omega Ruby/Alpha Sapphire, and after I got Ruby I was bored while playing through it. I was so worried that I just wasn't into Pokemon anymore. However, now I can't wait to start my Alola journey with Rowlet.
I will say, there aren't very many Alola Pokemon that I really care for so far. But that's fine, there are still many to be announced. And at the very least I get to play through with my old favorites. I'm mainly interested in the design of the region, it looks very scenic. Exploring has always been one of my favorite things to do in games.