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?
Diane Duane did this? I have no idea why but I thought she died. Huh. Guess not.
Um… I see no problem if they release the revision as a new edition and don’t overwrite my ebooks. I don’t mind buying books again if I like the author enough side-eyes my collection of various Lord of the Rings editions.