Apple's Mac OS X El Capitan update releases on 30 September

Today's event skipped over Mac, but Apple cleverly planted a launch date reveal

The Mac might have been a no-show at Apple's big event today, which brought us the iPhone 6s and 6s Plus, iPad Pro, new Apple TV, and various Apple Watch updates, but there was a sort-of-subtle announcement hidden amidst the demos.

While showcasing the new 3D Touch (Force Touch) feature on the iPhone 6s, we caught a glimpse of a staged email between Apple execs Phil Schiller and Craig Federighi. Titled "El Capitan status," the email from Phil read:

"El Capitan is looking great and the feedback from the beta has been fantastic. I say we get it out to customers ASAP!" The El Capitan ship date is September 30." Emphasis theirs, of course. And to add an extra wink to the news, it added, "P.S. Apple Confidential and Super Secret" in bright red lettering.

A late September launch is earlier than expected, given the October release for the last couple OS X iterations, but it looks like we'll have OS X 10.11 El Capitan ready to download before the month's out. And maybe we'll see that rumoured 4K refresh of the 21.5in iMac early too, if we're lucky.

If you haven't been following the latest news about El Capitan and didn't jump into the public beta test, read our recent look at the five best new features found in OS X 10.11 - and go ahead and start backing up your Mac so you're ready when 30 September hits.