Apple will drop support for 32-bit apps with the next iteration of iOS. Apple is ending support for 32-bit apps with the launch of iOS 11 in September, reports 9to5Mac citing developer Steven Troughton-Smith. The end of 32-bit app support means the legacy apps will no longer work with iOS devices.
Smith also adds that future A-series chipsets from Apple won't even include 32-bit support. The move might help Apple improve performance or free up space. Apple has been cracking down on 32-bit apps since the launch of iOS 9. With iOS 9, Apple alerted users that 32-bit apps may slow down their device performance. With the release of iOS 10.3, Apple started issuing notification that developer needs to update or improve the compatibity of their app.
https://twitter.com/stroughtonsmith/status/850628553972514816
By dropping support for 32-bit apps, Apple aims to remove 'problematic and abandoned apps' from the App Store. Back in September, Apple detailed new efforts to focus on app quality over quantity and recently removed 50,000 apps from the App Store. We'll likely hear more about this effort at WWDC 2017 in June.