Einige Screencasts von CivicActions zeigen schon mal was mit Drush 5 möglich ist. Sehr nett.
A new command in Drush 5 is the runserver command (alias “rs”), which is a built in web server for development. All you need is the php-cgi binary and you can bring up a server (and logged in web-browser, if you like!) for a specified site in seconds – no need to have Apache configured for the site, or even running.
All you need is php-cgi and the PDO sqlite driver – you don’t need MySQL or Apache running at all. Running the command will download and install Drupal (or your choice of distribution) as well as any contrib projects you like, start the built in php webserver and open your default browser with you already logged in as user 1.