I just picked up a new Apple Watch Sport SG at the Apple Store yesterday and got home with it at 5pm. After a few minutes of pairing and fiddling, I set to upgrade WatchOS. After over an hour of frustration with it first telling me I needed to delete apps to have room to install it (clearly not the case based on Usage) and then a period of time when it kept saying it lost communications with the watch, I decided to do a reset to factory and start over. The second time through, I decided not to let it install any apps on the watch to avoid that problem, and I started the upgrade immediately. That was about 6:30pm I think. As of 1am, it still said it had 3 hours remaining on the "downloading" step. I wasn't going to pull an all nighter for my watch, so went to bed. When I woke up, it had finishing installing and after a bit of fiddling I got the watch to ask me if it could install. About another hour later it finally finished verifying and I had to go put it on the charger to get it to try to load, even though the battery was 100%. Another half hour I came back and it was done. I don't usually whine and complain about this kind of thing, but this is pretty much ridiculous and I doubt the average non-geek buyer is going to be this patient. Buying what is probably one of the most popular models, I'm kind of surprised it wasn't updated already. This to me is an indication that sales must not be that awesome if the inventory turns are so low that they still don't have them updated on the shelf. Now to figure out if I really want to keep this and use it.