Season 2 of Diablo 4 is accompanied by the release of Patch 1.2.0 which introduces seven new Legendary Aspects to the game! This includes two new generic Aspects and five class-specific Aspects (one for each class).
Diablo 4 Season 2 Campfire Chat Liveblog Summary Diablo 4 Patch Notes: Patch 1.2.0
Blizzard
The Aspect below can be found on Boots and Amulets.
Aspect of Slaughter (Generic Mobility Aspect): You gain 20% Movement Speed.