We finally got the transformed Lillie official art I'm so happy! She looks great, and while I don know if the transformation is sooner I'm glad that she has official art now! And Hau, what happened to make you so serious? If anyone harms the pure boy I will be sad. Note that he can be seen in what looks like Ten Carat Hill.
It also seems my hopes were confirmed and Mina has a proper trial! I wonder who she's replacing - Acerola is definitely still a trial captain, Mallow still has a trial, the "Trial Start!" logo appears to be seen in Verdant Cavern so Ilima might still man that one, Togedemaru's apparently replaced Vikavolt and while Salazzle isn't the totem of Wela and Kiawe isn't present there is still a trial there, so the only real candidate is Lana. The Dragon trial being replaced is a possibility but considering the presence of Ryuki that implies to me that the Dragon trial still exists. Maybe Ilima doesn't man the Verdant Cavern anymore, but I don't see any reason for that area becoming a Fairy trial of all things. And considering how Brooklett Hill looks drained out of water to some people, Lana not being a trial captain is a possibility.
Here are my thoughts on the trials and kahunas:
Ilima, still the same.
Lana, isn't a captain due to Brooklett Hill looking oddly drained and having to look after siblings.
Kiawe, most likely still a captain, just late to his trial with David keeping an eye on people coming. Also, new totem.
Mallow, still the same.
Sophocles, still the same but with new totem.
Acerola, definitely has a trial but is confirmed different. Acerola looks panicked, oh boy.
Unmanned Dragon Trial, probably run by Ryuki now.
Mina, replacing Lana in an unknown order.
Hala, still kahuna.
Olivia, not a kahuna, possibly because she has a shop to run and it's more popular in USUM so it's busier.
Nanu, if he's not a kahuna I'll shoot something.
Hapu, I really don't know but I hope she's a kahuna.
Kahili, replacing Olivia because I spotted a golf course on Akala.