Basically Splits are now called Seasons, and these new Seasons (splits) will be divided in Acts (this one being divided in 2)
The old thing that was called Seasons is probably just gonna be called the Year now...
So for the Year of 2025 we'll have the first 3 Seasons of this new model, each spanning around 4 months, and each being divided into Acts (I think they'll usually go for 2 acts per season with 2 months each)
I'm wondering if they'll go Noxus, Demacia and Ionia for the first 3 seasons this year, these being the regions they mentioned they wanna explore in future shows based in the Runeterra universe
But from the sound of it they'll also mix some random thematics for seasons inbetween the ones that actually explore the actual lore of the canon universe... so yeah, we'll probably have a bee season someday lmao