Check With IT
If you use your Android smartphone or tablet for work, you might want to check in with your IT department (if you have one) before you install the Android 7.1.1 update.
If you're lucky, your co-workers in IT have been using the Developer Preview and they'll be able to provide you with valuable feedback about the update.
Enterprise problems are extremely common after major Android releases and there's a chance Android 7.1.1 will wreck havoc on your apps and services. Your company's IT department could warn you about potential problems and give you guidance.
If you don't have an IT department, you might want to think about checking in with a knowledgeable co-worker that's using Android 7.1.1 Nougat. Pick their brain and see if they're encountering any issues with the new software.