In the recent Plat Chat episode sideshow kept saying that there will be more teams each year (for example 12 teams in 2025, 13 in 2026, so on). But as I remember (I could be wrong) didn't riot said that partnered teams are contracted for 4 years and that they don't own the slot and also that ascension teams will be allowed only 2 years in the main VCT leagues and then they will be demoted allowing for new teams to enter main leagues.