I didn't mention the werebear's speed being nerfed. I was thinking about how they rolled out a change for the wereforms and then changed it again after people complained that they nerfed the werewolf. At least that's what I recall. Now that they seem to have maybe nerfed whirlwind.... I think my point stands. I could be wrong, though.
Edit: based on the new ias calc you linked, if I forward my WWsin to D2R, I'll need 13 more ias from gear to reach the last bp. I haven't checked how barbs are affected, but that seems like a nerf to me. Then again, maybe they
wanted to nerf WW.
I haven't worked out how the new hit checks affect the overall DPS. Maybe it's the same or even buffed slightly with these changes.