Official Ekko Reveal boys!
http://eune.leagueoflegends.com/en/page/champion-reveal/ekko-boy-who-shattered-time
This guy looks so fucking fun.
Just from what I see, he's definitely solo lane. Build will probably involve Black Cleaver and Blade of the Ruined King, considering his kit allows him to keep on top of his opponent. His passive can keep him glued to the enemy with the movement speed buff for him and the slow on his opponent. Additionally, his E allows for him to close the gap rather easily, and his W can keep the enemy slowed while giving him a shield in case allies of the enemy turn. If I had to take a guess on skill max order, it would probably be R>Q>E>W if ahead, and R>Q>W>E if behind. Additionally, contrary to what most people believed, his ult does indeed heal him. So, if he's in the middle of a teamfight and feels as if he's going to die, he can ult away, heal a bit, and then can re-engage at the end of his ult. Additionally, in a team fight, he is capable of stunning the entire enemy team if he can get the entire team in his W and close the gap. Ekko's a very mobile champion, so if people play him correctly, he has high potential for assassination and can severely punish his lane opponent for overextending. If he throws out Q, he can slow the enemy to allow for an easy W+E stun. If he puts down W and then closes the gap with E, it will detonate and stun the opponent. From there, he needs to proc his passive to slow his enemy more while allowing him to kite away from a possible countergank. Additionally, his W will make cleaning up low health enemies very easily, as it acts similar to the Executioner mastery. While this passive can be useful, I feel as if W is probably the lowest priority if he's winning lane, as the mobility from E will do him better in gluing to his targets. He's very complex, so his skillcap is probably going to be very high. I'll try to get some gameplay with him once he's on the PBE so I can develop a more experienced opinion.