As an AW3 LTE owner who is thinking of upgrading to AW4 LTE, it occurred to me that when the Series 5 is released my AW3 LTE will suffer a sharper resale decline than other watches have done during previous release cycles. Why? Well, I suspect next cycle we’ll see more AW4s that have full ECG functionality crowding out the AW3 at a significantly more attractive price. Apple’s pace of innovation on the watch appears to be hitting a steeper part of the innovation curve. This leads me to believe it’s actually smarter to upgrade this year. What do you think? (And yes, I know the ECG functionality may not benefit everyone or could be overblown.) P.S. Even with istocknow and random trips to the Apple Store, I couldn’t even upgrade if I wanted to. In Los Angeles, there is a severe shortage of Apple Watches, including the one I want.