Public Preview: Azure Cosmos DB spherical quantization for improved vector search

Retirement: Azure Synapse Link for Azure Cosmos DB NoSQL

As of March 31, 2026, new Azure Cosmos DB NoSQL accounts can no longer enable Azure Synapse Link. Existing customers will remain fully supported until March 31, 2029, when Azure Synapse Link will reach end of life.

Generally Available: Azure Cosmos DB Linux emulator (vNext)

We are announcing the general availability of the Azure Cosmos DB Linux emulator (vNext), a cross-platform, Docker-based emulator for local development and testing against Azure Cosmos DB for NoSQL.