Apple's September 16th release of watchOS 2 for the Apple Watch has been delayed:
"We have discovered a bug in development of watchOS 2 that is taking a bit longer to fix than we expected," an Apple spokesperson told TechCrunch [techcrunch.com]. "We will not release watchOS 2 today but will shortly."
Anandtech [anandtech.com] notes that Apple Watch "is managed from your iPhone and has no way to be connected to iTunes by a user for a restore [so] it's extremely important that Apple ensures the stability of updates before shipping them".