You shouldn't dwell on these concerns, there is no need for worry in this situation.
Even though notifications may occasionally arrive early, it is quite customary for Libera to make announcements at a later date.
For instance, the spring concert in Ely 2017 was disclosed on March 5 for a concert scheduled on April 29, and Arundel 2019 was announced on March 9 for a concert on June 22.
The Japan 2019 tour was unveiled on March 24 for a tour set in late October. The Japan 2018 tour was announced on July 7 for late October.
As for the United States, the organiser himself stated last summer that the substantial costs would hinder the possibility of hosting a new tour the following year.
While fundraising efforts persist, and there will undoubtedly be future tours in the USA, whether it will occur in 2024 remains uncertain.
Patiently await the announcements; they will come in due time, and there's no need to worry
(One can also add the example of the UK 2022 tour, announced on June 24 for a first concert on July 29, which is barely over a month ahead
)
Combination of late announcement and not great promotion I guess.
