It looks like Riot Games announced all the things during their 10th anniversary celebration stream.
A new League of Legends champion, Senna, was shown off. Described as possessing “marksman-like” play style, Senna will be available on October 29 in beta and be live on November 10.
Additionally, Rise of the Elements is coming to the beta servers on October 22 with gameplay involving Elemental Drakes. This will go live on November 20.
A new hero-shooter, dubbed Project A, was also announced. This was described as a character-based shooter mixed with tactics, but we won’t hear more about this until 2020.
Project L, a new fighting game, was also announced. Set in the LoL universe, it sounds like Project L is still in the early stages of development.
A new social game, Project F, was also announced. We still know not much about this one. Legends of Runeterra, a card game, was announced and sounds like it will be F2P.
Wild Rift, basically LoL for mobile and consoles, was announced. Additionally, Teamfight Tactics is coming to mobile in Q1 2020.
Finally, a LoL animated series, dubbed Arcane, was announced for 2020. And a LoL Esports Manager was also announced, along with a feature-length documentary about LoL, called League of Legends Origins.