Popular Twitch streamer Felix 'xQc' Lengyel discovered a glitch with the wingsuit in Blackout, that will allow your character to move much faster than simply sprinting.
The wingsuit is always on your character in Blackout, allowing you to jump from heights like the Hydro Dam or Construction site.
It is intended to only be usable from a certain height, however, xQc found a way to simply spam the wingsuit even when just jumping on the ground.
The character then appears to glide for a short distance, before sprinting again, which can then be repeated constantly.
The movement speed is much faster than simply sprinting, or sprinting and jumping. It is unclear what the exact combination or timing of xQc's key presses are, but given how easily he replicates it, it appears straightforward.
To bring out the wingsuit, you just need to hold the jump key/button, while sprinting (off a ledge typically, but not in this case).
xQc is of course playing on PC with a keyboard and mouse, and it is unknown if the same movement glitch can be replicated with a controller on console.
Developers Treyarch have said they will be rolling out a big game update sometime in the next week, so it's possible that they are already aware of the issue and have a fix planned.
But, this is one of the first instances of the glitch captured by a top streamer or YouTuber, meaning if Treyarch wasn't aware, they soon will be.