I'm waiting this one out. I just started a new job and the last thing I want to risk right now is my phone acting wonky. Besides, its an incremental upgrade even though security is always the primary reason you should upgrade. I still feel like all the pieces need to fall in place first before I do upgrade. That drag and drop features between iPad OS 15 and Monterrey has been delayed. So, I will start upgrading with my 6s being the first pilot after the new MacBook Pros are released. By then, we should have a few point updates. With millions of new iPhone 13's going out Friday with iOS 15 installed, it should be a good test bed for finding show stoppers and getting them fixed. Looking back to iOS 14, it was an awkward launch, I believe 14.1 was actually in testing before GM.