According to Riot Games, Brandon "Ryze" Beck and Marc "Tryndamere" Merrill will be stepping down from their positions leading League of Legends, and instead focus on developing other Riot games.
Who: Beck and Merrill are the co-founders of Riot Games. They began development on League of Legends in 2005.
Reason: With 2,500 employees and 20 global offices, Riot is now at a size where Beck and Merrill are spending more time managing than leading creative decisions to improve player experience. Their new goal is to "finally put the 's' in Riot Games."
Who is taking over: Dylan Jadeja (CFO), Scott Gelb (CTO), and Nicolo Laurent (President) will handle company operations from now on.
"All three are longtime Rioters who have been integral to shaping our company’s vision, strategy, and culture over the last decade."
Consequences: It's likely very little will change in terms of League of Legends' development. As noted in the announcement, Beck and Merrill had limited involvement in this area at the time of stepping down.