I think that there will be no new drivers for the older versions.
Therefore, you can install a new system or leave the old one.
Take a moment to read http://sony-eur-eu-en-web--eur.custhelp.com/app/answers/detail/a_id/144324
"Please be informed that as of March 1, 2018, Sony will no longer provide drivers and software for VAIO® computers which shipped with the following Microsoft® Windows® operating systems preinstalled:
· Windows 95
· Windows 98
· Windows 98 SE
· Windows ME
· Windows 2000
· Windows XP
· Windows Vista"
I don't know about you but I do encounter folk that reload XP and Vista and then go find the drivers from the makers. Sony in this case is cleaning house so those folk are in for a rude surprise.
Moderators view? At least this one. We only lose what we don't backup. You can't count on the makers storing drivers for much longer.