The potential for bricking your iPhone while taking the iOS 10 update yesterday appears to have been a bit overstated.  This author successfully updated with no issues.  That said, early adopters certainly had a little trouble.  iOS 10.0.1 appears stable and worth applying if for only the security updates.

https://nakedsecurity.sophos.com/2016/09/14/will-ios-10-the-biggest-release-of-ios-ever-brick-your-device/