The musician character Larry Underwood is now black. He was white in the book.
FWIW, I recently revisited this book just a couple of months ago. I found it a little dated and in need of editing. Still one of Kings best.
What. I just pulled my copy off the shelf. Now his conversation with his mother about his record makes no sense:
"Also, you did something to your voice. You sound like a n*****."
...
"That brown soun, she sho do get aroun," Larry said, deepening his voice to Bill Withers level and smiling.
I'm surprised they didn't make Randall Flagg into a Donalt Trump clone.