Xcode 26.3 RC 2 vs Xcode 26.4 Beta 1

Compare critical compatibility fields before upgrading.

Field	Xcode 26.3 RC 2	Xcode 26.4 Beta 1	Diff
Release type	RC 2	Beta 1	different
Edition	Apple Silicon	Apple Silicon	same
Release date	2026-02-20	2026-02-16	different
Minimum macOS	15.6	26.2	different
Swift	6.2.4	6.3	different
iOS SDK	26.2	26.4	different
Build	17C528	17E5159k	different

Recommendation: keep production teams on stable releases unless you need to validate new SDK capabilities.