| Field | Xcode 3.1.3 | Xcode 3.1.4 | Diff |
|---|---|---|---|
| Release type | stable | stable | same |
| Edition | - | - | same |
| Release date | 2009-06-16 | 2009-07-09 | different |
| Minimum macOS | 10.5.7 | 10.5.7 | same |
| Swift | unknown | unknown | same |
| iOS SDK | 3.1.3 | unknown | different |
| Build | 9M2736 | 9M2809 | 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。