I'm not sure, but I think alternate forms like Alolan forms and Megas are defined in the scripts and not in the PBS. This was at least the case in previous Essentials versions.
Jan already made the experience with people sharing DLs of Rejuv betas, so I don't think he'd let anyone play Rejuv sooner than others, cuz they could easily share the DL
Nope, I'm here instead.
Baumina, you asked me what I'm doing during quarantine? Well, it's simply playing games or being in online classes, what about you?