Kennen has an Incorrect tooltip
On Kennen's "e" ability, "Lightning rush," it says Kennen gains 335 movement speed for 2 seconds. As I used the abilty I noticed that that it only gives 230 movement speed. Here is some proof below, sorry for poor quality.
Kennen's base movement speed - http://gyazo.com/0c09ea981e1a6e3177b9422edafe0554
Kennen's movement speed with Lightning rush is active - http://gyazo.com/e9028a0e4c301dbad60d69f1cf9df128
Gif of Lightning rush being active (Poor Quality) - http://gyazo.com/d79f58002a9c28db4e13e7b313a18eaa