Apple is informing its sea of developers that previous versions of their respective apps are now available for re-download by users who have a lower iOS version than iOS 7.
Customers are now being allowed to use previously-purchased apps with older devices “which may no longer be supported by the current version of your app,” according to Apple’s memo to developers.
“If you do not wish to make these versions available, you can manage the availability of your apps' previous versions in the Rights and Pricing section of the Manage Your Apps module in iTunes Connect,” Apple says, supplying a link for more information.
The gist of it is that developers can now selectively distribute binaries of the same app that work on different iOS versions. This is a first for Apple, and it will be quite interesting to see how many developers will go to the trouble of maintaining an iOS 6 version of a certain piece of software.