For some reason, adrenaline no longer increases Strength. It gives a -3 to Intelligence and +10 speed. That’s it. It no longer has a crash, either.
And as far as I can tell, this +10 speed does absolutely nothing. Movement speed does not change, nor does dodge or attack speed. It does make you wait 10 turns longer when you pass a turn. So if anything, it makes you slower.
So all adrenaline currently does is give you brain damage for an hour.