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
based on the progress bar this won't happen. be patient, it's really annoying for devs if people always ask for release dates even though there is a progress bar.
I highly doubt they will say that (it'd be some kind of spoiler after all)