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.

Language changes

Core classes updates

Note: We're only listing outstanding class updates.

Array
- Array#pack now raises ArgumentError for unknown directives. [Bug #19150]
String
- String#unpack now raises ArgumentError for unknown directives. [Bug #19150]

Stdlib updates

The following default gems are updated.
- RubyGems 3.5.0.dev
- abbrev 0.1.1
- bundler 2.5.0.dev
- csv 3.2.7
- fiddle 1.1.2
- optparse 0.4.0.pre.1
- stringio 3.0.5
- strscan 3.0.6
The following bundled gems are updated.
- minitest 5.17.0
- rbs 2.8.3

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

Supported platforms

Compatibility issues

Stdlib compatibility issues

C API updates

Implementation improvements

JIT