I'm expecting wireless charging from a meter away. You put a charger unit on your nightstand and it charges on your wrist while you sleep.
BTW I have a Tissot watch I bought for $350 35 years ago, I seldom take it off, it still tells perfect time to the second, takes a battery every two years, and its sapphire crystal hasn't got the tiniest scratch. So clearly I expect the iWatch to have a sapphire crystal, and probably a liquidmetal case rather than the usual stainless steel (since liquidmetal can be molded).
Also, it will be smaller than expected, since some of the device will reside in the watchband, like some or all of the battery, and maybe antennas and sensors, letting the main case stay small. The band would still be replaceable, but by special Apple bands in various colors/styles.
Good taste, I wear a Tissot too, and yes I feel it will take chunks out of any door frame I catch it on as opposed to getting damaged itself, great solid quality.
Hmm interesting ideas, it copies the Nike band with the battery's in the band itself, I think it will represent more of a band as opposed to a watch design, it can present itself better to the market then I think, or they will launch a watch and band. Considering Apple's experience with the fuel band, and that they are not going to replace the fuel band with a new model, I think this is the route Apple will take, or perhaps a kinda hybrid design.