TL;DR: Short ramble; Diablo 4 announced, looks awesome, but as a fan I’ll wait and see how the game shapes up when its released in several years before I buy it or not.
Considering how much I got burned when I pre-ordered D3, I’m gonna hold off on buying it despite being a huge Diablo fan. Blizzard’s been on my shitlist for a while now too.
They put in a lot of effort this time and it damn well shows. Given they’re going back to the roots and eliminated the terrible cartoon artstyle (mostly - from what I saw), it thawed my icy deposition as a hardcore Diablo fan a little, especially given my hatred of Diablo III. I still want to see people’s opinions on it when it gets released in a few years before I buy it or not.
The combat looks great, especially with the Druid tidbit I saw in the gameplay trailer. A bit disappointed with the class selection, but hell, I’ll wait and see.
Edit: That and the music is very reminiscent of Diablo/Doom (reminds me mostly of Doom).