Way back in April 2004, news came out that the comics company run by the Dabel Brothers was to publish a comic book based on a Harry Harrison story.
George R.R. Martin reported the fact on his website, indicating that the comic would be based on “an original story penned by Harry Harrison.”
The Dabel Brothers had at that time already successfully adapted Martin’s The Hedge Knight and works by other SF writers. Since then, their publishing company has become part of Marvel comics, and rumours have continued that the Harry Harrison project is still in the works, but there has been no firm news one way or the other.
The Dabel Brothers website is currently down for a revamp, though the forums are still open. Latest news is that they are to adapt Dean R. Koontz’s Frankenstein series. A search of the forums reveals no mention of the Harry Harrison project.
More news on this in the near future, hopefully.