The text of the books has never been changed, it’s just one of those things that some fans believe ought to happen, so it comes up every so often, or they ask Hidalgo about it. “New novelizations to better fit the blah blah continuity blah blah consistent with blah”
It would be funny if they added text like “Luke stopped his land speeder and then a huge dinosaur-like creature appeared and moved slowly past him”.
“LOL”, Luke exclaimed, as the silly robot donked the other silly robot on the head before going back to picking up a random steel beam.
“Aaaaaahhhhh!!!”, Luke screamed, as he fell from the platform. The Emperor heard this through his connection with the force, probably, and considered, “What a marvelous scream. If I were to fall down such a shaft, heaven forbid, I too would like to scream like that.”