Today, iOS 11 for iPhone and iPad will release alongside watchOS 4.
iOS 11 brings a lot of new features that you are going to love. Specifically, the iPad gets a ton of new productivity features including drag and drop, better multitasking, a Files app, and new notes features. I have been running the beta of this software on my iPhone and iPad since July. While they are not the most stable of recent iOS updates, I think they are solid enough to download on day one if you want to take advantage of the new features.
Stay tuned here as I will be doing some writing on how to take advantage of the new iPad features of iOS 11 in the coming weeks.