Couchbase is preparing to release the .NET SDK version 2.1.0, which will introduce significant enhancements such as support for async/await keywords and a new non-blocking IO model, promising up to 10 times the performance improvement over the synchronous API. The anticipated release is set for the first week of April 2015. Meanwhile, version 2.0.3 has been released as a maintenance update, addressing various bugs and improvements, including the addition of async methods for ClusterManager and BucketManager classes, and configuring operation lifespan. Notable changes include the renaming of the ConnectionTimeout property to SendTimeout and alignment of the .NET Prepared Statement API with the Java SDK. The packages for version 2.0.3 are available on NuGet, S3, or directly from the master source.