Xcode 26.4 Beta 3 vs Xcode 26.3

Compare critical compatibility fields before upgrading.

Field	Xcode 26.4 Beta 3	Xcode 26.3	Diff
Release type	Beta 3	stable	different
Edition	Universal	Universal	same
Release date	2026-03-09	2026-02-26	different
Minimum macOS	26.2	15.6	different
Swift	6.3	6.2.4	different
iOS SDK	26.4	26.2	different
Build	17E5179g	17C529	different

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