I have my app available on app stores of multiple countries. When I update my app, can I pick and choose which countries to update? What happens to the App in the countries that I choose not to update? Will the older version of the app remain or will it be deleted from that country's app store?
App upgrades across multiple countries
You can release a phased in update in stages, but you cannot pick/choose which countries/stores will receive an update if you leave the app on sale in all of those countries.
For new users, there can only be one version of the same app in the store at the same time.
Existing users, in some examples, can re-download previous versions.