Btw, I just had a chat with another Eurovision fan and apparently, the "official list of participants", which usually gets released late October to mid-November, hasn´t really been "final" in the end - we have had slight changes (due to certain circumstances) in recent years:
2022 - RuZZia got disqualified and banned from entering Eurovision
2021 - Belarus got disqualified because of using Eurovision as a propaganda tool/submitting political entries celebrating dictatorship
2020 - no changes but Eurovision got cancelled
2019 - Ukraine withdrew (Maruv´s ego)
2018 - North Macedonia had withdrawn before it got added again
2017 - Russia withdrew because it was unwilling to accept Ukraine´s laws and wanted to provoke/mock the hosts
2016 - Romania got disqualified THREE weeks before the Grand Final
2015 - Australia was added as an "one-off"
2014 - Slovenia didn´t appear on the official list - the EBU extended their confirmation deadline
Within the last 9 years, all official lists got slightly altered after EBU´s announcement.
The only exception: 2020 (and then the entire contest got cancelled).