I was expecting it on September 20. I miss when macOS was in sync with the rest of the ecosystem. These arbitrary delays with no ETAs for macOS to catch up to everything else are becoming quite frustrating.
It never was.
iOS 7: September 18, 2013
macOS maverick: October 22, 2013
iOS 8: September 17, 2014
macOS Yosemite: October 16, 2014
iOS 9: September 16, 2015
macOS El Capitan: September 30, 2015
iOS 10: September 13, 2016
macOS Sierra: September 20, 2016
iOS 11: September 19, 2017
macOS High Sierra: September 25 2017
iOS 12: September 17, 2018
macOS Mojave: September 24, 2018
iOS 13: September 19, 2019
macOS Catalina: October 7, 2019
iOS 14: September 16, 2020
macOS Big Sur: November 12, 2020
So much like all of the recent posts That Apple used to be more user-friendly under Steve Jobs, you are looking at the past with rose tinted glasses.
Hell, who can forget that macOS X leopard was originally supposed to launch in spring 2007, but got delayed till October 2007 because of the iPhone?
Some things never change, and the truth is that A brand spanking new version of iOS and macOS have never launched on the same day, and don’t even launch in the same month more than not.
Hell for the fun of it…
iPhone OS 1.0: June 29, 2007
Mac OS X Leopard: October 26, 2007
iPhone OS 2.0: July 11, 2008
iPhone OS 3.0: June 19, 2009
Mac OS X snow leopard: August 28, 2009
iOS 4: June 21, 2010
Mac OS X lion: July 20, 2011
iOS 5: October 12, 2011
Mac OS X mountain lion: July 25, 2012
iOS 6: September 19, 2012