Release v1.20.0-rc.1

Author: josevalim

CHANGELOG.md

@@ -158,6 +158,18 @@ The code above has a type violation, which is now caught by the type system:
 
 The type system was made possible thanks to a partnership between [CNRS](https://www.cnrs.fr/) and [Remote](https://remote.com/). The development work is currently sponsored by [Fresha](https://www.fresha.com/) and [Tidewave](https://tidewave.ai/).
 
+## v1.20.0-rc.1 (2026-01-13)
+
+### 1. Bug fixes
+
+#### Elixir
+
+  * [Kernel] Improve the performance of the type system when working with large unions of open maps
+  * [Kernel] Do not crash on map types with struct keys when performing type operations
+  * [Kernel] Mark the outcome of bitstring types as dynamic
+  * [Kernel] `<<expr::bitstring>>` will have type `binary` instead of `bitstring` if `expr` is a binary
+  * [Kernel] Do not crash on conditional variables when calling a function on a module which is represented by a variable
+
 ## v1.20.0-rc.0 (2026-01-09)
 
 ### 1. Enhancements

VERSION

@@ -1 +1 @@
-1.20.0-rc.0
+1.20.0-rc.1

bin/elixir

@@ -6,7 +6,7 @@
 
 set -e
 
-ELIXIR_VERSION=1.20.0-rc.0
+ELIXIR_VERSION=1.20.0-rc.1
 
 if [ $# -eq 0 ] || { [ $# -eq 1 ] && { [ "$1" = "--help" ] || [ "$1" = "-h" ]; }; }; then
   cat <<USAGE >&2

bin/elixir.bat

@@ -4,7 +4,7 @@
 :: SPDX-FileCopyrightText: 2021 The Elixir Team
 :: SPDX-FileCopyrightText: 2012 Plataformatec
 
-set ELIXIR_VERSION=1.20.0-rc.0
+set ELIXIR_VERSION=1.20.0-rc.1
 
 if    ""%1""==""""                if ""%2""=="""" goto documentation
 if /I ""%1""==""--help""          if ""%2""=="""" goto documentation