This is the general availability release for the 3.1.0 version of the driver.

The main new features in 3.1.0 include:

• Support token field type and array field expressions with Atlas Search builders for equals operator - CSHARP-4926
• Support SearchIndexType option when creating Atlas Search indexes - CSHARP-4960
• Support for valid SRV hostnames with less than 3 parts - CSHARP-5200
• Support for search sequential pagination - CSHARP-5420
• Support for Mql methods: Exists, IsMissing and IsNullOrMissing in filters when possible - CSHARP-5427
• Support for Exact Vector Search (ENN) - CSHARP-5212
• Allow sort option to be supplied to update commands (updateOne, etc.) - CSHARP-5201
• Disabled TLS renegotiation when possible - CSHARP-2843
• Fix a bug in discriminator convention inheritance - CSHARP-5349
• New Serializers for ImmutableArray and other immutable collections - CSHARP-5335
• Minor bug fixes and improvements.

The full list of issues resolved in this release is available at CSHARP JIRA project.

Documentation on the .NET driver can be found here.