I have a theory and thought it'd be fun to put it to other worldly MR readers to see what they think. I don't think the electronics of the Apple Watch are not going to change very much over coming years. Watch II or Watch III may be very similar indeed when it comes to spec list -- which some will find deeply disappointing. I don't think the Watch's hardware has to change, any more than your Swiss watch's mechanism has to swapped out for something different every few years. A watch is about function, and the Apple Watch fulfils its function with the existing hardware. Better hardware isn't really going to change that. What will change with each iteration of the Apple Watch is the design (straps and Watch itself), and the battery life (watch for radical improvements there), and Watch OS will continue to be optimised and improved. But in five years time your five-year-old Apple Watch Sport may well perform exactly the same as a brand new off-the-shelf model. This answers the question of why people should feel safe investing tens of thousands of dollars in an Apple Watch Edition. It'll fulfil its function for years, perhaps only with the need to swap out the battery when it gets worn out – just like with any other watch. With a stable and unchanging hardware platform, Watch OS becomes the primary development focus and this only has to cater for one device – the Watch! Therefore there are surely lots of optimisation options open to Apple's developers. It's not like iOS, where it needs to run on several different devices. There's only one piece of hardware to worry about. I'll bet that Watch OS is the gift that keeps giving with its updates.