Test Drive MySQL 26.10 on Amazon RDS
Amazon RDS for MySQL 26.10 is now available in the Database Preview Environment, letting you kick the tires on the pre-release version. This update brings performance improvements for READ COMMITTED workloads by eliminating global mutex bottlenecks on NUMA systems, plus smarter purge lag warnings in your error logs so you can spot performance issues before they bite.
source: [aws/whats-new]