Author: Tobie Morgan Hitchcock Three months after 3.0 went GA, we're excited to announce that SurrealDB 3.1 is now available. This is the first minor release in the 3.x series. It builds on the foundations we shipped in 3.0 with a focus on stability, a second approximate-nearest-neighbour index in DiskANN, and a substantial round of security hardening. Alongside the release, we're also rolling out a change to how we develop and ship SurrealDB. The full list of changes is in the 3.1 release notes . Below are the highlights. What's new in 3.1 DiskANN approximate-nearest neighbour index SurrealDB now ships DiskANN as a second ANN index type, sitting alongside HNSW. DiskANN trades a different set of memory and recall characteristics and is well suited to larger-than-memory vector workloads, which has been a recurring request from teams building production agent and search systems on SurrealDB. The introduction of DiskANN also drove an end-to-end overhaul of the ANN warm-lookup path.…