Apple and some of their more rabid Macoltyes have long sneered at Microsoft's 'Patch Tuesdays', yet a large part of that fan base hyperventilate each Fall if Apple doesn't release a new OS (or, that is to say, the same old OS, but with something sparkly for the "Squirrel!" effect) according to the user's perceived timeline. And they grow suspiciously silent when a seemingly rushed out-the-door (because it's the Fall!) OS then requires a number of patches (sorry...'updates') in rapid succession to make it stable.
For a number of Apple users, I'd like to suggest that many would be content with a stable core OS - "It Just Works", with incremental monthly 'updates' to fix niggling issues, and offering security updates - and leave the wholesale new OS to years when the Company actually has something to show for it - a "One more thing" moment - and that isn't going to create more issues than it fixes. And continue to support that stable core OS.
Yes, continue to offer Apple apps in the Store, for those who want to update their iWork, or Garageband or Safari, or whatever; and offer the ability for users to download from the Store and add the sparkly bits if they feel so inclined.
Otherwise, IIABDFI (If It Ain't Broke...) applies.
