Aerospike has released version 4.4 with operational improvements and the Change Notification feature. The new release includes features such as Quiesce, limiting data migration, rack-aware reads, read cache, histogram and timeout fixes. These enhancements aim to improve latency, reliability, and cost efficiency for users. Additionally, Aerospike's Kafka connector will be the first component to use the Change Notification feature, allowing real-time updates of different analytic stores and improving analytics responsiveness.