Diablo 2: Resurrected is a full reboot of the Blizzard's hack-and-slash RPG first released two decades ago. It promises updated graphics, 4K gaming, and all the content from Diablo II and it's expansions.
However, Diablo 2: Resurrected is a remaster, not a remake — as head of Diablo, Rod Fergusson stressed at the initial announcement. Gameplay-wise, fans can look forward to 3D models and quality-of-life changes improving on the original experience. But if the nostalgia is too much to bear, a legacy toggle lets you switch from the new graphics to those of the original Diablo 2.
Launching on Battle.net means that we'll see features available on release that weren't around back in 2000, like dedicated servers, and easy access to your friends list.
The downside is that modding will be affected because of Battle.net's stricter security measures. But mods will still be allowed so long as they're not injecting code straight into the game.