Release Date: 4 August 2026

The Neo4j Aura July release has started to roll out, commencing on AuraDB Free and progressing to higher tiers later.

Release Note for Neo4j 2026.07

Cypher 25 Features

Introduced the GROUP BY subclause to WITH and RETURN. The GROUP BY clause allows the user to explicitly state the grouping keys for an aggregating operation. This is an alternative to the implicit grouping already available in Cypher, and is introduced to better align Cypher with the GQL standard. See Cypher Manual -> Group By
Adds the GQL cardinality() function for Cypher 25; it returns the number of keys in a MAP, elements in a LIST, or nodes and relationships in a PATH. See Cypher Manual Scalar Functions-Cardinality
Procedure calls that run against the system database can now filter results using the WHERE clause. See Operations Manual -> Call a procedure.

High-Fidelity Quantized vector search is now generally available. The default index configuration for new indexes is Scalar quantization with an expansion factor of 1.5, existing indexes are unaffected until they’re rebuilt. See Vector indexes – Cypher Manual.

Fixed an issue where notification filters set on the driver session were dropped when a query was forwarded via server-side routing, causing suppressed notifications to still be returned to the client.
Fixed an issue where creating a vector index when setting `vector.quantization.enabled`: false without `vector.quantization.type`: ‘NONE’ in the index configuration.
The backup correctly picks the most recent valid chain when restoring from a folder, which would previously fail if the last backup was an orphaned diff.

Clustering – When the raft prefetch buffer is reset, the size of the buffer is also now reset
Cypher – Fixed a bug where EXISTS expression nested in a quantified path pattern would trigger a class cast exception.

Please refer to the changelog for full details of the changes, and Neo4j Release notes for all changes to other Neo4j products and services.

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