I don’t think it is. I can’t imagine there would be a plan ahead of time of how many maintenance updates there will be.
Cubase 12 stopped at .70, yes, but Cubase 11 ended with .41. The version before that, called it quits with 10.5.20…
I don’t know what the schedule is suppose to be nowadays. It’s been quite unpredictable since v11 was released.
Matthias was kind enough to answer[1] when 13.0.30 was released that it was not the last update. Perhaps they don’t know themselves this time?