Being an iPhone user since standing in line on June 29th 2007, and having owned every single iPhone since then, and being the biggest Apple fan out of everyone I knowI'm going to pass on this one. The fingerprint thing is cool, and 64-bit is nice and all, but I've never used my iPhone 5 and thought that it was slow. It will be interesting to see what developers do with the M7 processor. This is a solid upgrade for those who haven't upgraded in a while, but I don't see many iPhone 5 users upgrading this time around.
Here's to hoping for a liquid-metal iPhone 6 with a 4.54.7" (wider not taller) display, further improved camera, NFC wallet for mobile payments, and 802.11ac, and 32/64/128GB at current price points. I'm not saying that the 5S should have had all of these features, but I'm hopeful that the iPhone 6 will have many of these features.