| Field | Xcode 6.1 Beta 1 | Xcode 6.1.1 | Diff |
|---|---|---|---|
| Release type | Beta 1 | stable | different |
| Edition | - | - | same |
| Release date | 2014-09-09 | 2014-11-14 | different |
| Minimum macOS | 10.9.4 | 10.9.4 | same |
| Swift | unknown | unknown | same |
| iOS SDK | unknown | unknown | same |
| Build | 6A1027 | 6A2006 | 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。