Xcode 10 added a new system architecture, arm64e E. Apple did not advertise, but automatically added it to the new project.

Devices using Apple A 12 or higher A-series processors (such as iPhone XS, iPhone XS Max and iPhone XR) support the ARM64E architecture.

Some information about arm64e is as follows:

/documentation/security/preparing _ your _ app _ to _ work _ with _ pointer _ authentic ation

/52624308/xcode-arm 64-vs-arm 64e