The Harrowing is upon us!
This was released yesterday which brought around a few changes. Graves, the Outlaw has been released. I have already played multiple games with this champion fighting by my side, who performed really well.
The Harrowing itself has brought a few Halloween related changes to the League if Legends world. New Quintessences, skins and items, all of which can be viewed here (including the trailer): http://euw.leagueoflegends.com/harrowing