The Blizzard launcher got an update earlier today that gives it a more streamlined look by reducing the size of the icons and fonts for the games along the left side. In addition, the panel can be reduced to only see the icons themselves without the text.
It appears that these changes are in preparation for the launch of Destiny 2 later this year as well as leaving room for NEW games to be added.
Last week, dataminers uncovered text strings in the Hearthstone client that seem to indicate that an offline mode for the Blizzard launcher will (finally) be added sometime in the future as well.
I suppose we all ought to thank Destiny 2 for the much-requested upgrades, right?