| Field | Xcode 7.1 | Xcode 7.1.1 | Diff |
|---|---|---|---|
| Release type | stable | stable | same |
| Edition | - | - | same |
| Release date | 2015-10-21 | 2015-11-05 | different |
| Minimum macOS | 10.10.5 | 10.10.5 | same |
| Swift | 2.1 | unknown | different |
| iOS SDK | unknown | unknown | same |
| Build | 7B91b | 7B1005 | 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。