It will soon be a year since KDE gave the great jump to the sixes: Plasma 6, KDE Frameworks 6 and they started to adopt Qt6, which was joined by a new set of applications. At that time they proposed a change: as GNOME does, They would start releasing only two versions of Plasma per yearWell, almost twelve months later, they have already debated enough to make a decision, and for the moment there will be no changes.
This was communicated by Nate Graham in su Blog. The bulk of the debate took place at last year's Akademy, and They have decided not to do it. The culprit: Wayland. The graphics server itself isn't a problem, but it does have room for improvement. Plus, it's constantly being updated, and releasing fewer Plasma versions could put a strain on the entire KDE desktop.
KDE will continue with three releases per year
Although what is really stopping them is the Wayland major bug list which KDE has yet to fix. The decision was made not to release two versions a year for the time being, until that list is empty or almost empty. At that time, they will debate again.
But why the debate of two vs. three versions per year? For two reasons. First, because the desktop is mature and no longer requires as many updates. Second, because it is a bit like GNOME in this regard, the desktop used by distributions like Ubuntu and Fedora, which releases its iterations about a month before the new versions of these distros and gives them time to always use the latest version of the desktop. The main beneficiaries would be Kubuntu and Fedora KDE.
But that will be in the future, as long as Wayland allows it and there are no major problems in Plasma, something that is not in KDE's plans.