On the latest DrupalConsole release the Launcher aka the global executable is a stand-alone full CLI application. Yes, it was like this before, but at some point on RC releases when the per-site installation was introduced we removed global commands and most of the Launcher features, but after receiving feedback and analyzing the benefits, we decided to bring back the Launcher as a full CLI application.
So far nothing. You are still able to run the command drupal from any directory within your site project or use --root option to specify your Drupal project directory.
Make sure you update the DrupalConsole and Launcher to the latest version by executing: