Amazon Corretto 27 is now generally available
Amazon Corretto 27 is now available for Linux, Windows, and macOS, supported through April 2027, featuring G1 as the default garbage collector, post-quantum hybrid key exchange for TLS 1.3, compact object headers, and in-process data redaction for JFR.
Amazon Corretto 27 is now generally available. Amazon Corretto is a free, multi-platform OpenJDK distribution downloadable on Linux, Windows, and macOS, supported until April 2027. Key new features include defaulting to G1 garbage collection across all environments, post-quantum hybrid key exchange combining classical and post-quantum algorithms for TLS 1.3 connections, Compact Object Headers to reduce Java object memory footprint, in-process data masking for Java Flight Recorder recordings, expanded pattern, matching, and instance check support for primitive types, improved structured concurrency APIs to handle related tasks as single work units, provision of lazy initialization APIs, and enhanced support for high-performance mathematical operations. Details are available on the OpenJDK 27 project page.
Why it matters
Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK widely used for deploying and running Java applications reliably.