diff --git a/CHANGELOG.md b/CHANGELOG.md
index 091ba77fc..07ee13703 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,21 @@
+### [1.10.0] 2020-01-XX
+
+  * Breaking: `composer global exec ...` now executes the process in the current working directory instead of executing it in the global directory.
+  * Warning: Added a warning when class names are being loaded by a PSR-4 or PSR-0 rule only due to classmap optimization, but would not otherwise be autoloadable. The next minor version will stop autoloading these classes so make sure you fix your autoload configs.
+  * Added support for configuring suggestions using config command, e.g. `composer config suggest.foo/bar some text`
+  * Added support for configuring fine-grained preferred-install using config command, e.g. `composer config preferred-install.foo/* dist`
+  * Added `@putenv` script handler to set environment variables from composer.json for following scripts
+  * Added `lock` option that can be set to false, in which case no composer.lock file will be generated
+  * Added support for IPv6 addresses in NO_PROXY
+  * Added package homepage display in the show command
+  * Added debug info about HTTP authentications
+  * Added Symfony 5 compatibility
+  * Added --fixed flag to require command to make it use a fixed constraint instead of a ^x.y constraint when adding the requirement
+  * Fixed GitHub deprecation of access_token query parameter, now using Authorization header
+  * Fixed archive command to persist file permissions inside the zip files
+  * Fixed init/require command to avoid suggesting packages which are already selected in the search results
+  * Fixed create-project UX issues
+
 ### [1.9.2] 2020-01-14
 
   * Fixed minor git driver bugs
@@ -783,6 +801,7 @@
 
   * Initial release
 
+[1.10.0]: https://github.com/composer/composer/compare/1.9.2...1.10.0
 [1.9.2]: https://github.com/composer/composer/compare/1.9.1...1.9.2
 [1.9.1]: https://github.com/composer/composer/compare/1.9.0...1.9.1
 [1.9.0]: https://github.com/composer/composer/compare/1.8.6...1.9.0
diff --git a/src/Composer/Command/InitCommand.php b/src/Composer/Command/InitCommand.php
index 440187ae8..d234a8cba 100644
--- a/src/Composer/Command/InitCommand.php
+++ b/src/Composer/Command/InitCommand.php
@@ -16,6 +16,7 @@ use Composer\DependencyResolver\Pool;
 use Composer\Factory;
 use Composer\Json\JsonFile;
 use Composer\Package\BasePackage;
+use Composer\Package\Package;
 use Composer\Package\Version\VersionParser;
 use Composer\Package\Version\VersionSelector;
 use Composer\Repository\CompositeRepository;
@@ -702,13 +703,13 @@ EOT
     private function getMinimumStability(InputInterface $input)
     {
         if ($input->hasOption('stability')) {
-            return $input->getOption('stability') ?: 'stable';
+            return VersionParser::normalizeStability($input->getOption('stability') ?: 'stable');
         }
 
         $file = Factory::getComposerFile();
         if (is_file($file) && is_readable($file) && is_array($composer = json_decode(file_get_contents($file), true))) {
             if (!empty($composer['minimum-stability'])) {
-                return $composer['minimum-stability'];
+                return VersionParser::normalizeStability($composer['minimum-stability']);
             }
         }
 
diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
index 441fe6818..78a418a33 100644
--- a/src/Composer/Command/ShowCommand.php
+++ b/src/Composer/Command/ShowCommand.php
@@ -201,6 +201,9 @@ EOT
                 if (empty($package)) {
                     $options = $input->getOptions();
                     if (!isset($options['working-dir']) || !file_exists('composer.json')) {
+                        if (preg_match(PlatformRepository::PLATFORM_PACKAGE_REGEX, $input->getArgument('package')) && !$input->getOption('platform')) {
+                            throw new \InvalidArgumentException('Package ' . $packageFilter . ' not found, try using --platform (-p) to show platform packages.');
+                        }
                         throw new \InvalidArgumentException('Package ' . $packageFilter . ' not found');
                     }