Question about Courier Speed

#1 - July 30, 2013, 8:18 p.m.
Blizzard Post

“World vs. World Supply Mastery
Become a master of supply with the Supply Master World vs. World ability line. This line includes benefits like increased supply pick-up speed, Courier Speed when you pick up supply, and a chance to get supply back when you use it!”

What does it mean? is it something that stacks to our normal speed buffs , timer based, or is it going to become something else ?

#2 - Aug. 1, 2013, 11:30 a.m.
Blizzard Post

Courier speed is a 50% movement speed increase and doesn’t stack with Swiftness.