I am tempted to update my iPhone 6 to iOS10 on launch day next week, but there is an Apple Store right by my work that I can pop into during lunch and give the interface a test drive before deciding. Does anyone know how quickly they update their display devices at the Store? Should I wait a day or so after release? EDIT: I should note, my local store is currently averaging 9.3.1ish on their devices (not fully up to date to 9.3.5). But I wonder if a major OS upgrade would inspire them to do a full update across the board?