On July 5, after beginning of new season blizzard updated old version (Season 9) PvP gear from iLvL 365 to 371. No one knew about this update before july 5th and after the release of patch 4.2 lots of players spent hours of playing battlegrounds to get enough honor points for Season 9 gear to be geared for new season.

Since Blizzard never announced about gear update, players were dissapointed for spending their honor points on old gear. Today on Battle.net forum Blizzard announced that every player who bought any piece of Season 9 iLvL 365 gear from June 28th to July 5th, will get 4000 honor point compensation during the server maintance on July 19.

Source - http://us.battle.net/wow/en/forum/topic/2838424151