the reason they use CGI for de-aging is because they need to remove skin from the faces. why would they need a reverse CGI for making them older?They're gonna need a whole lot of CGI and prosthetics on the original cast members, but what can they do about voice? I'd guess MARVEL's de-age but in reverse effect for the whole movie would be very expensive to pull off. As per voice that changes over time as well....
t:the reason they use CGI for de-aging is because they need to remove skin from the faces. why would they need a reverse CGI for making them older?t:
I always wanted a Snape origins... I know there's a very well made fan-film out there tho
WB aren't planning on making a Harry Potter and the Cursed Child movie.
http://www.huffingtonpost.in/entry/rumors-has-it-warner-brothers-wants-to-make-three-more-harry-potter-movies_us_57c6cc50e4b0e60d31dc397b

Of course they aren't gonna admit it when Fantastic Beasts (the first of a trilogy) isn't even released yet.