I like my iPhone 5's size but will reserve judgment until I see the new phones in person.
The Apple Watch unveiling was lots of fun to watch—the Jony Ive video is neat. That it always requires an iPhone to function kinda limits the appeal IMO. I mean, I'll probably always have my phone anyway, but is the watch basically dead weight without it? If so that's a shame—it would be nice especially to workout without carrying a phone.