Erlang OTP-28.0 released!

NewsBot · 21 May 2025 12:24

Erlang OTP-28.0 has been released.

OTP 28.0

Erlang/OTP 28 is a new major release with new features, improvements as well as a few incompatibilities. Some of the new features are highlighted below.

Many thanks to all contributors!

Starting with this release, a source Software Bill of Materials (SBOM) will describe the release on the Github Releases page.
We welcome feedback on the SBOM.

New language features

Functionality making it possible for processes to enable reception of priority messages has been introduced in accordance with EEP 76.

Comprehensions have been extended with “zip generators” allowing multiple generators to be run in parallel. For example, [A+B || A <- [1,2,3] && B <- [4,5,6]] will produce [5,7,9].

Generators in comprehensions can now be strict, meaning that if the generator pattern does not match, an exception will be raised instead of silently ignore the value that didn’t match.

It is now possible to use any base for floating point numbers as per EEP 75: Based Floating Point Literals.

Compiler and JIT improvements

For certain types of errors, the compiler can now suggest corrections. For example, when attempting to use variable A that is not defined but A0 is, the compiler could emit the following message: variable 'A' is unbound, did you mean 'A0'?

The size of an atom in the Erlang source code was limited to 255 bytes in previous releases, meaning that an atom containing only emojis could contain only 63 emojis. While atoms are still only allowed to contain 255 characters, the number of bytes is no longer limited.

The warn_deprecated_catch option enables warnings for use of old-style catch expressions on the form `catc…

Link: Release OTP 28.0 · erlang/otp · GitHub