KDE's Megarelease 6 - Release Candidate 2
Wednesday, 31 January 2024
https://kde.org/announcements/megarelease/6/rc2/

fedora 40 の beta 2024/3/19 付近が一般への最初のお披露目かな。
https://fedorapeople.org/groups/schedule/f-40/f-40-key-tasks.html