This release requires Erlang/OTP 27+ and is compatible with Erlang/OTP 29. 
1. Enhancements
Elixir

[Code] Add :dbg_callback option to eval functions
[Code.Fragment] Allow preserving sigil metadata in container_cursor_…

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Elixir v1.20.0-rc.4 has been released, requiring Erlang/OTP 27+ and compatible with OTP 29. Enhancements include a new :dbg_callback option for eval functions, Process.get_label/1, improved undefined function error reporting, and Mix dependency override support. Bug fixes address Integer.extended_gcd/2 negative GCD edge cases, struct recompilation regressions, type propagation in guards, URI.merge path handling, and several Mix compile and test issues including Windows argv limits and umbrella build locking.

Elixir v1.20.0-rc.4 released