Apple will not be releasing watchOS 2 today as planned, the company has confirmed to Pocket-lint. It cites a bug that is taking longer than expected to fix, causing a delay as to when the operating system can be made available. 

"We have discovered a bug in development of watchOS 2 that is taking a bit longer to fix than we expected," Apple confirmed. "We will not release watchOS 2 today but will shortly."

The company has said that it will still be going ahead with the iOS 9 update for supported iPhone and iPad devices, as it isn't affected by the same issue.

Apple's watchOS 2 was scheduled to launch today (16 September) and introduce a number of new features to Apple Watch devices, including an improved Siri, native apps, third-party complications, nightstand mode and more. 

Apple hasn't said when the new update will now roll out to customers, but those who were eagerly awaiting it shouldn't have too much longer to wait.

We will keep you posted.