---
title: CSharp-SDK - v1.2.1
slug: feature-experimentation/release-notes/csharp-sdk-v1-2-1
docTags: 
createdAt: 2026-07-20T15:44:56.832Z
---

November 6, 2017

\### New Features
\* Package DLL's including third party component DLL's are strongnamed and digitally signed by Optimizely.

\* DecisionService GetVariationForFeatureRollout added.

\* Feature Flag and Rollout models added.

\* Implemented Bucketing ID feature.

[https://github.com/optimizely/csharp-sdk/releases/tag/v1.2.1](https://github.com/optimizely/csharp-sdk/releases/tag/v1.2.1)