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Xcode 4.0 vs Xcode 4.0.1

Compare critical compatibility fields before upgrading.

FieldXcode 4.0Xcode 4.0.1Diff
Release typestablestablesame
Edition--same
Release date2011-03-092011-03-23different
Minimum macOS10.6.810.6.8same
Swiftunknownunknownsame
iOS SDKunknownunknownsame
Build4A304a4A1006different
Recommendation: keep production teams on stable releases unless you need to validate new SDK capabilities.