I don't know if I'm intrigued or worried by the news the Coen brothers will script a new version of True Grit, the only role for which John Wayne ever won an Oscar (even though he might have merited it more for The Searchers).
On the one hand, the bros. are intending to write a screenplay that hews closer to the original Charles Portis novel. So they aren't necessarily looking to rewrite John Wayne, and I imagine that the Duke might have liked to work with the guys who created Blood Simple and No Country for Old Men.
On the other hand, this is John Wayne, and the character of U.S. Marshal Reuben J. "Rooster" Cogburn is probably one of the most defining roles he had in his later career. And the Coens are also the guys who did this. So I guess we'll just wait and see.