I think in the past the new versions are usually released in August. On a PSP Users forum associated with Corel, they always post new threads for “what do you like about new version” and “wish list for what you would like to see in the next version”. Those have always been posted in August or late July.
Personally, I usually wait until the next version has been out for several months before I buy it (if I do). With Corel having constant sales on PSP 2022, I’m guessing the next version will be coming by the end of the summer.