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Apple delays release of watchOS 2 due to bug

The Apple Watch
Getty Images
The Apple Watch

Apple has pushed back the release of its new Apple Watch operating system due to delays in fixing a glitch.

The update, called watchOS 2, was slated for release Wednesday. But a "bug in development" of the software has taken longer than Apple expected to fix, the company said.

"We will not release watchOS 2 today but will shortly," an Apple spokesperson said Wednesday.

Apple has previously said watchOS 2 will make applications run faster and more efficiently. The update will add options to customize watch faces and improve navigation and email functions, among other changes.

Apple has yet to officially report sales figures for the watch, which launched earlier this year.

Apple shares were trading flat shortly before noon ET.

CNBC's Josh Lipton contributed reporting.