Hurricane rune on WW will no longer allow Barbarian to move as quickly, severely hurting their efficiency and damage output. The number of tornadoes generated by Sprint is dependent on movement speed, so with such a large speed reduction less tornadoes will be generated.
This is a pretty huge hit to WW Barb.
However depending on how good the "Dust Devil" rune is for WW, it may not be as bad as it seems.
EDIT: WW Barb is 100% dead with rest of the changes released.