I've just come back from a wall like that. My wait is over! You can take it from me it'll be worth the wait. It reminds me of the similar wow factor I got when I first picked up the k-3. It feels fast, and responsive. Autofocus has improved a lot, although the focus points do feel a little clumped into the center. The viewfinder reminds me of the 35mm cameras of old - nice, big, and bright. The menu system is a little sleeker than on the k-3. It's a little bigger and heavier than I'm used to, but after about an hour of playing with it, I've got used to it. Sadly I'm on a long dull train journey home, with not much photographing opportunity