A new launcher: install it once

A new launcher is on the download page. Install it over the one you have: it keeps your game files, your login and your settings, so nothing is downloaded again.

• It updates itself. This is the last time you install the launcher by hand.
• Game updates are about ten times smaller. The next one is about 160 MB instead of about 1.5 GB.

The launcher you have keeps working, but it downloads game updates the slow way.