I feel the pain of all of you who are still waiting - we've all been there. Rest assured that when you do get a despatch email, everything happens VERY fast - I got my despatch email at 6.20pm on Thursday and the device was in my hands by lunchtime the following day, which I was pretty stunned by. I'd convinced myself that with it having been despatched so late in the day there wouldn't be time to get it out to the delivery company for a next-day delivery.
By contrast, I bought some new earbuds from the Apple Store recently and it took about 3-4 days after the despatch email to actually get them - clearly they send the Watches as higher priority shipping.