Something will happen in the next few days ( calculation of new skins, new champ and Urgot rework)
Its really quite at the moment. We saw last week 2 icons appear on the PBE ( teaser of angelblade riven and demon blade yasuo) also the whole pbe cycle is kinda small ( yeah , rek and kindred mini update, but nothing big in skins, other reworks) . So we know that in the next patch we will get the 2 skins mention already and some work at the support class. I don't think that is all. We know that Riot said the next champion will released before Urgot ( he will come in June (maybe early of July) I guess, this could match to the time distances and the work plan for future content) and they said this champion will come very short after Xayah & Rakan. So there are only the patches 7.12 , 7.13 and maybe 7.14 left, but we all know that a leak apear last week that the new champion will come in 7.12. So I expect that we will get the teaser in the next few hours and the champion comes in 7.12 or the teaser happens in 7.12 and we will get the champion 7.13
I do not guarantee that this is 100% true, but I think it fits. I hope you understand my way of thoughts and think the same way.