Which boundaries are you looking to push? Aside from the camera, WP does not offer bleeding edge technology on the hardware side.
My thoughts exactly. Most of the boundaries Microsoft pushes are their boundaries only.
Bob, I have AT&T, so I could get the 1520. Unfortunately, it's too big for me. The Icon or 930 would be the perfect size, but AT&T doesn't have either.
You are in the same predicament as a lot of other 920 users, but I'm sure I don't need to tell you that! It's soon time for an upgrade, but there are no good replacements on AT&T. I'm afraid that WP will lose some AT&T users this winter because of this. And then there's the (finally) larger iPhone 6, LG G3, and the Note 4. I wouldn't be surprised if the iPhone 6 will even pull in some Android users.