diff --git a/src/Smrtr/MysqlVersionControl/TeardownCommand.php b/src/Smrtr/MysqlVersionControl/TeardownCommand.php
index b01f933..5316ff2 100644
--- a/src/Smrtr/MysqlVersionControl/TeardownCommand.php
+++ b/src/Smrtr/MysqlVersionControl/TeardownCommand.php
@@ -27,7 +27,7 @@ protected function configure()
     {
         $this
             ->setName($this->env)
-            ->setDescription('Install the '.$this->env.' versions')
+            ->setDescription('Tear down the '.$this->env.' database tables')
             ->addArgument(
                 'mysqlbin',
                 InputArgument::OPTIONAL,
diff --git a/src/Smrtr/MysqlVersionControl/UpCommand.php b/src/Smrtr/MysqlVersionControl/UpCommand.php
index 104fbb7..1ba8d45 100644
--- a/src/Smrtr/MysqlVersionControl/UpCommand.php
+++ b/src/Smrtr/MysqlVersionControl/UpCommand.php
@@ -16,6 +16,14 @@
  */
 class UpCommand extends Command
 {
+    /**
+     * @var string
+     */
+    const DEFAULT_PROVISIONAL_VERSION_NAME = 'new';
+
+    /**
+     * @var string
+     */
     protected $env;
 
     public function __construct($env)
@@ -46,6 +54,19 @@ protected function configure()
                 InputOption::VALUE_REQUIRED,
                 'Optional custom path to database versions directory'
             )
+            ->addOption(
+                'install-provisional-version',
+                null,
+                InputOption::VALUE_NONE,
+                'Install a provisional version which may still be in development and is not final.'
+            )
+            ->addOption(
+                'provisional-version',
+                null,
+                InputOption::VALUE_REQUIRED,
+                'The name of the provisional version',
+                static::DEFAULT_PROVISIONAL_VERSION_NAME
+            )
         ;
     }
 
@@ -83,7 +104,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $output->writeln('Installing version control...');
 
             $result = $buildConf->prepare(
-"CREATE TABLE `db_config`
+                "CREATE TABLE `db_config`
 (
     `key` VARCHAR(50) COLLATE 'utf8_general_ci' NOT NULL,
     `value` TEXT,
@@ -138,17 +159,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
         }
         $output->writeln('Available version: '.$availableVersion);
 
-        if ($currentVersion >= $availableVersion) {
-            $output->writeln('<info>Database version is already up to date.</info>');
-            return 0;
-        }
-
-        $noun = ($availableVersion - $currentVersion > 1) ? 'updates' : 'update';
-        $output->writeln(
-            "Installing database $noun (Current version: $currentVersion, Available version: $availableVersion)..."
-        );
-
-        // go from current to latest version, building stack of SQL files
         $filesToLookFor = [];
         if (!$input->getOption('no-schema')) {
             $filesToLookFor[] = 'schema.sql';       // structural changes, alters, creates, drops
@@ -160,20 +170,55 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $filesToLookFor[] = 'runme.php';            // custom php hook
 
         $stack = array();
-        for ($i = $currentVersion + 1; $i <= $availableVersion; $i++) {
+        if ($currentVersion < $availableVersion) {
+            for ($i = $currentVersion + 1; $i <= $availableVersion; $i++) {
 
-            $path = $versionsPath.DIRECTORY_SEPARATOR.$i;
-            if (!is_dir($path) || !is_readable($path)) {
-                continue;
+                $path = $versionsPath.DIRECTORY_SEPARATOR.$i;
+                if (!is_dir($path) || !is_readable($path)) {
+                    continue;
+                }
+
+                foreach ($filesToLookFor as $file) {
+                    if (is_readable($path.DIRECTORY_SEPARATOR.$file) && is_file($path.DIRECTORY_SEPARATOR.$file)) {
+                        $stack[$i][$file] = $path.DIRECTORY_SEPARATOR.$file;
+                    }
+                }
             }
+        }
+
+        // Look for a provisional version?
+        $provisionalVersion = null;
+        if ($input->getOption('install-provisional-version')) {
+
+            $provisionalVersion = $input->getOption('provisional-version');
+            $output->writeln('Provisional version: '.$provisionalVersion);
+
+            $path = $versionsPath.DIRECTORY_SEPARATOR.$provisionalVersion;
+            if (is_readable($path) && is_dir($path)) {
 
-            foreach ($filesToLookFor as $file) {
-                if (is_readable($path.DIRECTORY_SEPARATOR.$file)) {
-                    $stack[$i][$file] = $path.DIRECTORY_SEPARATOR.$file;
+                foreach ($filesToLookFor as $file) {
+                    if (is_readable($path.DIRECTORY_SEPARATOR.$file) && is_file($path.DIRECTORY_SEPARATOR.$file)) {
+                        $stack[$provisionalVersion][$file] = $path.DIRECTORY_SEPARATOR.$file;
+                    }
                 }
             }
         }
 
+        $updates = count($stack);
+        if (!$updates) {
+            $output->writeln('<info>Database version is already up to date.</info>');
+            return 0;
+        }
+
+        $noun = ($updates > 1) ? 'updates' : 'update';
+        $report = "Current version: $currentVersion, Available version: $availableVersion";
+        if (is_string($provisionalVersion) && array_key_exists($provisionalVersion, $stack)) {
+            $report .= ", Provisional version: $provisionalVersion";
+        }
+        $output->writeln(
+            "Installing database $noun ($report)..."
+        );
+
         $s = '\\' == DIRECTORY_SEPARATOR ? "%s" : "'%s'"; // Windows doesn't like quoted params
         $cmdMySQL = "$mysqlbin -h $s --user=$s --password=$s --database=$s < %s";
 
@@ -232,7 +277,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 }
             }
 
-            if ($result) {
+            if ($result && is_int($version)) {
                 $result = $buildConf->query(
                     "REPLACE INTO `db_config` (`key`, `value`, `updated_at`) VALUES ('version', $version, now())"
                 )->execute();