From what I'm finding, that is just speculation; the Twitter account has yet to respond to anyone asking about it (unless I missed it somewhere).
My personal guess is that the CBT will have a lower cap, like lv45, and then they will increase it for the Open Beta and then "reveal" the Successor classes.
EDIT: So far, the only tweet I can find addressing it is this: https://twitter.com/play_pso2/status...95936563359744
Connect With Us