I know that iOS 11 is going to release soon. I have been searching the internet about this so that we aren't caught off guard with our iOS app that uses it but I haven't seen anything yet. Is anyone aware of potential compatibility issues?
We, MobileCaddy, have daily tests run on all Dev preview and public betas for Android and iOS. In our August Trust Update it covers the release so far, and we have not seen any issues to date. As an update to this we've also not seen any issues with the more recent betas, either.
Whist the iOS release looks OK, I'd recommend you also check your app on iOS 10/9 with Winter 18, we have seen an issue with Salesforce doing something funky if you're trying to open VF pages from within your app.