Nope.
Went from the original to the 4. This version was everything I wanted the original to be. I will likely skip iPhone 5 and maybe 6. Perhaps use 4 until it really breaks or can't hold a charge anymore.
Lately, I've been eating healthier and regaining more of my spirituality. From lifelong carnivore to becoming a pescetarian (like Steve Jobs) and churchgoer. I'm skinny already, but my family is known for high blood pressure and diabetes from their meaty diet. So changing bad habits was needed while I'm still a "young 30" since our 40's and 50's is when our body starts to really break down. Start now. My grandpa lived up to 97, and I inspire to live that long now. My obsession for phones has lessened. None of it is "forever", so my attachment to material things is fading. Finding more meaningful goals and accomplish things in my bucket list like traveling, skydiving, and riding motorcycles than obsessing over a phone with a temporary, hollow feeling.
If I do upgrade, it might be more carrier-based than phone/OS-based. LTE speed and tethering plans interest me more than what the phone looks or offers.