Netty 4.1 will be EOL on July 1st, 2027

Netty 4.1.0.Final was released on May 26, 2016 — over 10 years ago.

On April 3rd, 2025, we released Netty 4.2.0.Final to world, and have since focused our feature work on this series, with only bug- and security-fixes being backported to the 4.1 release series.

Today we are announcing that Netty 4.1 will be End-of-Life on July 1st, 2027. After this date, we will no longer support Netty 4.1, and we will make no further releases in this series.

All users and integrators are encouraged to upgrade to Netty 4.2. Please see our Netty 4.2 Migration Guide for help in this regard.

Thank you to everyone who contributed to Netty 4.1 over the years, and thank you to everyone who continue to contribute to Netty 4.2.