Couchbase has released Developer Preview 2 (DP2) of the .NET SDK 2.0, which introduces several new features in preparation for the upcoming Couchbase Server 3.0. The update includes SSL support for secure client-server communication, requiring Couchbase Server 3.0 and configuration changes on the client side. A key enhancement is the introduction of CRAM-MD5 SASL authentication, providing a more secure mechanism by hashing passwords during client-server exchanges. Additionally, DP2 supports configuration through Web.config and App.config files and expands available operations to include upsert, replace, and remove. Users are advised to provide feedback on this pre-release software, with a reminder that it is not intended for production use.