| Field | Xcode 12.1.1 RC 1 | Xcode 12.1 GM | Diff |
|---|---|---|---|
| Release type | RC 1 | GM | different |
| Edition | - | - | same |
| Release date | 2020-10-30 | 2020-10-20 | different |
| Minimum macOS | 10.15.4 | 10.15.4 | same |
| Swift | 5.3 | 5.3 | same |
| iOS SDK | 14.2 | 14.1 | different |
| Build | 12A7605b | 12A7403 | 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。