Last Wednesday, The Authors Guild had this to say:
Random House and HarperCollins are sending letters to authors and agents seeking amendments to contracts regarding e-book rights. These letters, although some suggest that the author's work was "selected" for digitization, appear to be going to virtually all authors who have no stated e-book royalty rate in their contracts. In some cases, the letters have gone to authors who have never granted e-book rights to the publisher.The Authors Guild goes on to say that both publishing houses are trying to lock in a 25% rate while e-book rates are still low.
These amendments should be treated with extreme care.
The Guild offers five suggestions for authors who did not give away their e-book rights when they signed their original contract. Go here to read the suggestions.