| Field | Xcode 7.2 Beta 1 | Xcode 7.2.1 | Diff |
|---|---|---|---|
| Release type | Beta 1 | stable | different |
| Edition | - | - | same |
| Release date | 2015-10-27 | 2016-02-02 | different |
| Minimum macOS | 10.10.5 | 10.10.5 | same |
| Swift | unknown | 2.1.1 | different |
| iOS SDK | unknown | unknown | same |
| Build | 7C46l | 7C1002 | different |
建议：如果你是生产环境主力开发，优先选择 stable 版本；如需验证新 SDK，再考虑 beta。