Could be, but when the new OS updates every 12 months they can either dedicate a whole chunk of their time updating to the new version, or make it work good on

Could be, but when the new OS updates every 12 months they can either dedicate a whole chunk of their time updating to the new version, or make it work good on a version that's still going to be supported for 3 or 4 years so they can focus on bug fixes and updates. Just because Apple can bump out a new OS version once a year doesn't mind these app developers have the same bandwidth to keep up the chase. They have plenty of other priorities.