I think since yesterday (Nov 6) the battle net app has not been launching games after a single click, so I have to click Play twice. When you click it the first time it does the loading and everything for a few seconds like if it’s gonna launch the game, but then it goes back to normal like if nothing happened and just doesn’t launch the game, when you do it the second time it does the exact same thing, starts loading for a few seconds, but on the second try it actually launches the game like it should.
If you talk about the newest Battle.net icon with the latest online games, then your Battle.net launcher probably was out-dated. An update can merely restore this status.