Warcraft III Reforged was just announced at BlizzCon and it set the arena on fire. The game will be heading to PCs in 2019 while a demo is now available on the BlizzCon floor. The demo will feature the "Culling" mission, which is arguably the highlight of the entire campaign.
As for the main package, it will contain the original Reign of Chaosgame alongside the excellent Frozen Throne expansion. It will feature fully remade character models with support for up to 4K rendering. All of the textures and cinematics will be redone to bring them up to current standards (though I still think the original looks great).
The remaster will be launching for $29.99 while a "Spoils of War" edition will go for $39.99 and contain a bunch of extras. These will include things like a "Meat Wagon" mount in World of Warcraft, a special card back in Hearthstone, and four heroes in Heroes of the Storm. Other goodies will be announced at a later date.
You can pre-order the game from Blizzard's website right now.