UK dates announced later: GENIUS
I was thinking about why charli would only announce the US tour dates and nothing else, risking enraging her european base and being forced to do a story to calm people, and then it came to me.
US citizens tend to have to pay ridiculously high prices, and a lot of them would rather plan an european summer and get tickets in Europe. By forcing FOMO on Americans and getting US tickets sold first, there'd be fewer contendants for the UK tickets.
On the other hand Europeans are less prone to travel to the US for a concert, and at the pric of a story calming those who think no dates ar coming, she's making sure both US AND UK dates sell!
I purposely do not say EU dates as I think she will only plan festivals outside of the UK. Simply put, she doesn't need to go to the EU to attract her fanbase in order to make a profit. I say this as someone who went from Italy to the UK for Lido Festival and was also able to see Beyonce a couple of days before and make a nice vacation out of it.
I really suggest you stay updated on charli's post and get a UK ticket as soon as possible after the announcement.
Thanks for reading my theory <3