NEWS for Ruby 3.3.0

This document is a list of user-visible feature changes since the 3.2.0 release, except for bug fixes.

Note that each entry is kept to a minimum, see links for details.

Command line options

Core classes updates

Note: We’re only listing outstanding class updates.

Stdlib updates

The following default gem is added.

The following default gems are updated.

The following bundled gem is promoted from default gems.

The following bundled gems are updated.

See GitHub releases like Logger or changelog for details of the default gems or bundled gems.


Compatibility issues

Stdlib compatibility issues

C API updates

Implementation improvements


GC / Memory management




M:N Thread scheduler