Hi,
If you’re an Ubuntu users, you can install the new Battle.net launcher with wine : it works !
You can check my tutorial and script here : (i am not able to give a link …)
cameliaweb DOT fr /blog/jeux-video-gaming/bienvenue-sur-le-nouveau-battle-net
P.S : my articles are in french, but easy to understand
Have fun with the new Battle.net launcher (I think it’s great !)