Latest Neo4j version 5.19 on Aura!

All Aura v5 databases are now running the latest Neo4j version 5.19.

Highlights include:

Surface for Developers and Data Scientists

GenAI plugin:

Support for Vertex AI taskType and title embedding parameters
Support for Vertex AI vector encoding models textembedding-gecko@002, textembedding-gecko@003, and textembedding-gecko-multilingual@001.

Language and Graph Model

An optional keyword DISTINCT can now be used after UNION as the explicit form of a UNION with duplicate removal. Users now have the options of UNION ALL, UNION DISTINCT or UNION (the existing behavior, which behaves as UNION DISTINCT). Documentation is available here.
For LIST and STRING concatenation, || can now be used as a synonym of + Documentation is available here and here.

Scale and Availability

A new and improved eagerness analysis algorithm reduces the number of eager operators and improves explainability and performance, and reduces memory utilization.

Operability & Observability

Plan descriptions produced by EXPLAIN and PROFILE now provide additional information about planned eager operators in the 'Detail' column, improving explainability.

Platform & Supportability

In line with OpenID Connect Core 1.0 updates to errata set 2, remove checks on the azp claim in OIDC tokens when there are multiple values in the aud claim.
Update Apache Shiro to 2.0.0

Security

Fixes

Kernel Fixes

A fix that avoids database issues following a leader switch in clustered setups on 5.18. We now perform an extra lease check to ensure a token's replicated state is current before checking its existence in the database. This prevents attempts to create duplicate tokens post-switch, which can cause database panics.
Fixed transaction logs metrics that weren't incremented in a cluster setup.
Fixes a rare issue in clustered setups where frequent leader switches could cause some internal record IDs to be reused.
Fixes a problem when the verbose flag was set while using neo4j-admin to output a dump file. This would cause both outputs to be written to standard out, resulting in garbage. When running neo4j-admin database dump --to-stdout neo4j any logging output is now directed to standard err, and the database dump will be directed to standard out.

Cypher Fixes

Bug fixes and security updates on IMMUTABLE privileges
Fix bug in pipelined runtime where a fused pipeline following a CALL IN TRANSACTION subquery without RETURN could have generated incorrect code for reading from input rows, which could lead to an IndexOutOfBoundsException.

Please refer to the changelog for full details of the changes.