新的应用必须使用iOS8 SDK生成，而且必须支持64位

64-bit and iOS 8 Requirements for New Apps

October 20, 2014

Starting February 1, 2015, new iOS apps uploaded to the App Store must include 64-bit support and be built with the iOS 8 SDK, included in Xcode 6 or later. To enable 64-bit in your project, we recommend using the default Xcode build setting of “Standard architectures”
to build a single binary with both 32-bit and 64-bit code.

从2015年2月1日起，上传到应用商店的新APP必须包含对64位的支持，而且必须使用iOS8 SDK生成，包含Xcode6及以上版本。

为了让你的APP支持64位，我们建议你使用Xcode的生成设置的“Standard architectures”来生成单独的32位和64位代码。