| Field | Xcode 12.3 | Xcode 12.4 RC 1 | Diff |
|---|---|---|---|
| Release type | stable | RC 1 | different |
| Edition | - | - | same |
| Release date | 2020-12-14 | 2021-01-21 | different |
| Minimum macOS | 10.15.4 | 10.15.4 | same |
| Swift | 5.3.2 | 5.3.2 | same |
| iOS SDK | 14.3 | 14.4 | different |
| Build | 12C33 | 12D4e | 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。