If it means anything, I also interpreted it that CL would charge immediately. Caligari also did the same with their latest upgrade. I don't know about their previous upgrades as I wasn't a customer then. BAM, one should always expect a company to charge immediately unless they specifically state otherwise; even you have confirmed this. CL did not do that. The fact that they stated "Preorders will be charged in full" basically states that CL charges immediately; at least in my mind.