Apple releases 64-bit gadgets for the past 3 years, and in 2015-th year, representatives of the IT giant has ordered the makers of the software for iOS move to 64 bit. When you run 32-bit applications in the latest versions of the operating system, you receive a warning about slow smartphone or tablet. IOS 11 support 32-bit programs may not be available at all.
So, in the beta version of iOS 10.3 user will see a message prompting you to update the app because of the inability to work with him the future, in the next versions of iOS.
In General, experts say, the move to 64 bits is justified — better performance in games and applications requiring large resources.