"A heroes’ journey is long and fraught with danger, but our goblin engineers have managed to cobble a little something special together for you to help make the path to power just a little bit easier.
Beginning Friday, May 30 at 9:00 a.m. PDT, through Tuesday, June 10 at 9:00 a.m. PDT, we’ll be applying theHeart of the Valorous buff which will increase the rate of Valor Point gains an additional 100%. Don’t wait to get in on the action!"
http://us.battle.net/wow/en/blog/14313211/heart-of-the-valorous-buff-5-29-2014