Start v1.20

Author: josevalim

CHANGELOG.md

@@ -8,6 +8,28 @@
 
 ## Type system improvements
 
+### More type inference
+
+Elixir now performs inference of whole functions. The best way to show the new capabilities are with examples. Take the following code:
+
+```elixir
+def add_foo_and_bar(data) do
+  data.foo + data.bar
+end
+```
+
+Elixir now infers that the function expects a `map` as first argument, and the map must have the keys `.foo` and `.bar` whose values are either `integer()` or `float()`. The return type will be either `integer()` or `float()`.
+
+Here is another example:
+
+```elixir
+def sum_to_string(a, b) do
+  Integer.to_string(a + b)
+end
+```
+
+Even though the `+` operator works with both integers and floats, Elixir infers that `a` and `b` must be both integers, as the result of `+` is given to a function that expects an integer. The inferred type information is then used during type checking to find possible typing errors.
+
 ### Type checking of protocol dispatch and implementations
 
 This release also adds type checking when dispatching and implementing protocols.
@@ -194,7 +216,7 @@ These additions offer greater transparency into the components and licenses of e
 
 This work was performed by Jonatan Männchen and sponsored by the Erlang Ecosystem Foundation.
 
-## v1.19.0-rc.0 (2025-06-09)
+## v1.19.0-dev
 
 ### 1. Enhancements
 

RELEASE.md

@@ -11,6 +11,7 @@
 1. Update version in /VERSION, bin/elixir, and bin/elixir.bat
 
 2. Ensure /CHANGELOG.md is updated, versioned and add the current date
+
    - If this release addresses any publicly known security vulnerabilities with
      assigned CVEs, add a "Security" section to `CHANGELOG.md`. For example:
      ```md
@@ -42,7 +43,7 @@
 
 ### Back in main
 
-1. Bump /VERSION file, bin/elixir, bin/elixir.bat, and bin/elixir.ps1
+1. Bump /VERSION file, bin/elixir, and bin/elixir.bat
 
 2. Start new /CHANGELOG.md
 

SECURITY.md

@@ -12,11 +12,12 @@ Elixir applies bug fixes only to the latest minor branch. Security patches are a
 
 Elixir version | Support
 :------------- | :-----------------------------
-1.19           | Bug fixes and security patches
-1.18           | Security patches only
+1.19           | Development
+1.18           | Bug fixes and security patches
 1.17           | Security patches only
 1.16           | Security patches only
 1.15           | Security patches only
+1.14           | Security patches only
 
 ## Announcements
 

VERSION

@@ -1 +1 @@
-1.19.0-rc.0
+1.19.0-dev

bin/elixir

@@ -6,7 +6,7 @@
 
 set -e
 
-ELIXIR_VERSION=1.19.0-rc.0
+ELIXIR_VERSION=1.19.0-dev
 
 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=1.19.0-rc.0
+set ELIXIR_VERSION=1.19.0-dev
 
 if    ""%1""==""""                if ""%2""=="""" goto documentation
 if /I ""%1""==""--help""          if ""%2""=="""" goto documentation

lib/elixir/pages/references/compatibility-and-deprecations.md

@@ -14,11 +14,12 @@ Elixir applies bug fixes only to the latest minor branch. Security patches are a
 
 Elixir version | Support
 :------------- | :-----------------------------
-1.19           | Bug fixes and security patches
-1.18           | Security patches only
+1.19           | Development
+1.18           | Bug fixes and security patches
 1.17           | Security patches only
 1.16           | Security patches only
 1.15           | Security patches only
+1.14           | Security patches only
 
 New releases are announced in the read-only [announcements mailing list](https://groups.google.com/group/elixir-lang-ann). All security releases [will be tagged with `[security]`](https://groups.google.com/forum/#!searchin/elixir-lang-ann/%5Bsecurity%5D%7Csort:date).
 
@@ -48,7 +49,7 @@ Erlang/OTP versioning is independent from the versioning of Elixir. Erlang relea
 
 Elixir version | Supported Erlang/OTP versions
 :------------- | :-------------------------------
-1.19           | 26 - 28
+1.19           | 26 - 27
 1.18           | 25 - 27
 1.17           | 25 - 27
 1.16           | 24 - 26
@@ -235,4 +236,4 @@ Version | Deprecated feature                                  | Replaced by (ava
 [v1.16]: https://github.com/elixir-lang/elixir/blob/v1.16/CHANGELOG.md#4-hard-deprecations
 [v1.17]: https://github.com/elixir-lang/elixir/blob/v1.17/CHANGELOG.md#4-hard-deprecations
 [v1.18]: https://github.com/elixir-lang/elixir/blob/v1.18/CHANGELOG.md#4-hard-deprecations
-[v1.19]: https://github.com/elixir-lang/elixir/blob/v1.19/CHANGELOG.md#4-hard-deprecations
+[v1.19]: https://github.com/elixir-lang/elixir/blob/main/CHANGELOG.md#4-hard-deprecations