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Release Notes for Feature Experimentation
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2026 Optimizely Feature Experimentation release notes
2025 Optimizely Feature Experimentation release notes
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Feature Experimentation SDK release notes
Feature Experimentation API changelog – 2025
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Release notes
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Swift SDK
Swift-SDK - 5.4.1
1 min
5.4.1
June 24, 2026
Fixes
normalize campaign_id, variation_id, and entity_id on decision events (#642)
https://github.com/optimizely/swift-sdk/releases/tag/v5.4.1
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