From 005b04449908875dd1c0be67de08158d684e19b3 Mon Sep 17 00:00:00 2001
From: Jae Kim <jae.kim@optimizely.com>
Date: Mon, 4 May 2026 14:05:02 -0700
Subject: [PATCH] [FSSDK-12546] prepare for release csharp-sdk v4.2.0

---
 CHANGELOG.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0686fcdf..d6fe2920 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 # Optimizely C# SDK Changelog
 
 ## 4.2.0
+May 4, 2026
+
+### New Features
+
+**Feature Rollout**: Added support for Feature Rollouts, a new experiment type combining Targeted Delivery simplicity with A/B test measurement capabilities. Feature Rollouts enable progressive rollouts with full impact analytics, metric tracking, and confidence intervals. See [Feature Rollout docs](https://support.optimizely.com/hc/en-us/articles/45552846481037-Run-Feature-Rollouts-in-Feature-Experimentation) for more information.
+
+## 4.1.0 (Previous)
 Nov 13, 2025
 
 ### New Features