Probably the best example I can think of is Diane Duane reworking her Wizards series to make it modern-day, but there are others, including owners of a literary estate altering books left to them to make them compatible with current standards.
What do you think? Does it matter if it’s the original author or an inheritor?
the author can do whatever they like with their book. revise, rewrite, remix - go nuts.
anyone else, including the publishing house? hands off. if you didn’t write it, you don’t get to ‘fix’ it.