The opening announcement on the game is currently letting us know that realms will be down for maintenance tomorrow from 5:00 a.m. PDT until 11:00 a.m. PDT. While the realms are going to be down, we are not expecting patch 3.0.2 to drop.
Earlier last week it was announced that 3.0.2 would come when season 4 ended. Season 4 was announced to end on October 14th, and thus we are all expecting patch 3.0.2 to come on October 14th.
However if for some reason it starts raining cats and dogs and the patch does drop, we'll let you know. But I wouldn't count on it.