Latest Neo4j version 5.18 on Aura!

All Aura v5 databases are now running the latest Neo4j version 5.18.

Highlights

Surface for Developers and Data Scientists

The GenAI Plugin introduces and defaults to a new vector search index provider, vector-2.0, which brings: Support for up to 4096 dimensional vectors and integral element vectors, An improved cosine similarity implementation & Relationship vector indexes.
Added support in the GenAI Plugin for the OpenAI text-embedding-3-large and text-embedding-3-small models. These new models have the optional dimensions::INTEGER configuration option, as they support shortening on both OpenAI and Azure OpenAI.
Added support for using Azure OpenAI as the embedding provider in the GenAI Plugin. (Documentation of the GenAI Plugin is here.)

Language and Graph Model

Extended the Simple CASE expression to allow predicate expressions (e.g. WHEN IS NOT NULL THEN 1) and comparison operators (e.g. WHEN <1 THEN 'small', and also to allow comma-separated WHEN operands (e.g. WHEN 'red', 'blue', 'green' THEN 'colourful'). (Documentation is here.)
INSERT can now be used as a synonym of CREATE when creating graph elements (documentation is available here).

Vector index updates:

Added pairwise vector similarity functions vector.similarity.euclidean and vector.similarity.cosine (documentation is available here).
CREATE VECTOR INDEX for relationship vector indexes (requires 'vector-2.0' index provider)
Support for indexes and queries with LIST<INTEGER|FLOAT> to help accommodate some implicit conversions that can occur with Cypher.
Documentation for vector indexes is here; see also documentation for syntax and procedures.

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