Plasma 6.4.5 is scheduled for Tue 2025-09-09. Plasma 6.5.0 for Tue 2025-10-21 followed by 6.5.1 on Tue 2025-10-28. After that 6.5.2 is expected on Tue 2025-11-04. The last release of 6.4 series is scheduled for on Tue 2025-11-11 as 6.4.6.
When we look at GNOME we will have 49.0 on 2025-09-17 and 49.1 on 2025-10-11.
To plan a new release of Manjaro as the distribution, we have to consider on what we want to provide, which new desktop environments we introduce and when. Zetar is focused on Plasma 6.3, GNOME 48.x and XFCE 4.20.
For the upcoming Manjaro 25.1 release we might have GNOME 49.x, XFCE 4.20 and some newer Plasma release, depending when we find time to do so.