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?
As long as their older stuff remains available for those who still want to read it, I’m fine with it. What I hate is when authors - both of books and fanfiction - rewrite the book over their old work.