The bio data is what interests me. I'm turned off by the lack of integrated GPS though, since that means it doesn't cut ties with having to carry the iPhone for RunKeeper.
I'm in the same boat on the phone. I've still got a 4 that is woefully inadequate for playing any modern apps that require more horsepower, and it looks like I'll be locked out of the upgrade path on iOS 8 too. I was holding off on the upgrade to a 5 because I was waiting for today's reveal (I've always stayed one gen behind so I can get the phones for ~$49 or $99), but the 6 plus the watch next year seem juicy enough that I may go skip the 5 now and just get the iPhone 6.