[gurkendoktor]

> They previously had a deadline for apps to have 64-bit version submitted, but backed off the ultimatum for now.

Apps have had to support 64-bit since June 2015 (February 2015 for new apps), and Apple hasn't backed off that deadline. But there are still 32-bit apps on the store that haven't received an 64-bit update, and I don't think Apple has ever stated what it is going to do about them (other than showing the warning).