WW got a pretty interesting change in 2.4.3. Dust Devils damage was greatly nerfed, but all Whirlwind damage is now increased by 800%. So the emphasis is kind of on a single target more now, instead of massive AOE damage.
WW is my favorite barb build and i wanted to create a solid video guide ages ago. In fact i did the written guide last season but was always busy and postponed video guide on an on. But no more... RISE BARBS! HERE WE GO! SPIN 2 WIN! :DDD
There were crazy amounts of people involved in PTR testing of WW set, tonns of feedback too on battle.net forums. Let's hope WW will be truly strong one day!
PS: Build is well known to many oldschool players out there, but may be useful to all the rest i guess
PPS: I also have Speedfarming build for WW as well since 2.4.1 and it's completely unchanged: