Haste only affects cast speed/swing speed right?
If that is the case than it would not affect windfury at all.
Windfury does not have a cast time, and the swing speed is instant when it procs.
As far as time between procs, that will be the same, Im sure that will stay nerfed for all eternity.
Keep in mind, Im no expert, but nothing at all points to this affecting windfury in the slightest. Sorry If there is something im missing.