Hello everyone.
So i wanted to play some WC3 on battle.net before Reforged is released. And then i couldn’t find a way to do it since WC3 is not for sale on any of the game distribution platforms including Blizzard Launcher.
So the question is how do i play WC3 on battle.net? I preordered Reforged but it seems there’s no way to download non-reforged game.
Once you buy Reforged, you should immediately receive cd-keys for vanilla version of Warcraft 3.
Check your games on battle.net site and there you can download game clients as well as find your cd-keys.
edit: Warcraft 3 vanilla is not yet available in modern battle.net application. It will be released along with Reforged(similar to Starcraft 1 process), but you can play multiplayer via old battlenet servers. 
No, you don’t get CD-keys.
But if you pre-order Reforged, the game will be added to your BattleNet account, then you can download the Classic Launcher here:
Then you have to to log in to your BattleNet account when you launch the game.
Ok, my bad 
, but didnt lie at all, you eventually get cd-keys, however you are(maybe) unable to see them, because then there would not be any way to play with our buddies on battlenet 1.0 servers .
I downloaded Warcraft 3 from battle.net maybe year or two ago and there was some kind of launcher plus cd-key. Its good that it is now directly connected to your account thou.