I've had my first gen touch since 2007, and haven't really seen either of the revisions to it. I still think the 1g is incredibly thin, so is the 4g going to be noticeably thinner than the first gen? My new one is supposed to arrive Thursday, but I'm just wondering how shocking it will be. Also, what was the battery duration estimated initially for the first gen? Obviously my battery life is significantly diminished 3 years later, but was it rated at something like 12 hours, or more like 20 when they first came out?