Patch 1.12.0 (patch date:2006-08-22): Attack delay raised from 20% to 25%.
Patch 1.8.0 (patch date:2005-10-10): No longer a talent. Now available to all Druids at level 40. Damage and Mana cost increased on all ranks. Spell is now cast on a targeted area up to 30 yards away and affected by Nature's Reach. Multiple Druids casting Hurricane will no longer stack the slowdown effect. Radius of effect decreased slightly.
Patch 1.2.0 (patch date:2004-12-18): A bug causing the Hurricane talent to not require channeling has been fixed. This spell now correctly requires channeling.