On Monday January 23, 2017 Apple issued update to iOS (iOS 10.2.1). Normally I would recommend everyone wait at least a week before updating your devices, but this update is different. Apple patched quite a few vulnerabilities in this update. Now these vulnerabilities took the best of the best in software security to find, which means that most likely hackers were not using these weaknesses. But now that Apple has released the update, the hackers know approximately what was patched. So don't wait too long before updating your iOS device to iOS 10.2.1. I haven't heard of any reports of anyone having any issues with the update so you are better off updating now so you aren't exposed to these vulnerabilities.