Update changelog

CHANGELOG.md

@@ -6,6 +6,9 @@ This changelog will be used to generate documentation on [release notes page](ht
 - [Extend the Beta period for Metrics Pre-Aggregation features shipped in 2.6.0-beta3.](https://github.com/Microsoft/ApplicationInsights-dotnet/issues/785)
 - [New: Added TryGetOperationDetail to DependencyTelemetry to facilitate advanced ITelemetryInitializer scenarios.  Allows ITelemetryInitializer implementations to specify fields that would otherwise not be sent automatically to the backend.] (https://github.com/Microsoft/ApplicationInsights-dotnet-server/issues/900)
 
+## Version 2.6.2
+- [Add netstandard2.0 target for TelemetryChannel which doesn't have a dependency on Newtonsoft.Json ](https://github.com/Microsoft/ApplicationInsights-dotnet/issues/800)
+
 ## Version 2.6.0
 - [Fix: changed namespace SamplingPercentageEstimatorSettings](https://github.com/Microsoft/ApplicationInsights-dotnet/issues/727)
 - [Extend the Beta period for Metrics Pre-Aggregation features shipped in 2.6.0-beta3.](https://github.com/Microsoft/ApplicationInsights-dotnet/issues/785)