What probably matters to youSection of the release
Unclear How the setting is meant to be set, from the command line or from a program using Claude Code, is not clear.
What
Claude Code hides some models from its model list when it treats them as unsupported for this version. A new includeUnsupportedModels setting, off by default, keeps those models in the list when set to true.
A matching --include-unsupported-models flag is passed on to processes that Claude Code starts, so they see the same list.
Why
It lets you, or a program that runs Claude Code, see and pick models that would otherwise be filtered out.