William Eggleston is one of the most renowned photographers alive, probably one of the very best that ever lived. You can see a lot of his work here [Link]. Recently, the Eggleston Trust issued new limited edition prints of earlier work in unusually large sizes and inkjet prints. They did extremely well at market, exceeding auction estimates by over 2X [Link], generating almost $6,000,000 in sales. Johnathan Sobel, a veteran Eggleston collector, was one of many who were annoyed about the release of the larger size works, and filed suit against the photographer in a U.S. District Court, accusing him of devaluing his vintage dye transfer prints by selling new, large-scale pigment prints of many of his iconic works.
There are two things here at play. First, limited editions in the art world, regardless of what one may think about them, are limited by size and medium. In other words, if you make a limited edition of 16x20" prints, you can make another limited edition of 44x60" prints, as the Eggleston Trust did. Or in this case, one edition is not only bigger, but an inkjet instead of a dye transfer.
Second, Sobel's lawyers will have to prove that his earlier smaller prints have fallen in price, and that is simply not the case at this time.
If Sobel were to win, hundreds, if not thousands of lawsuits could follow, as Eggleston is hardly the first artist to do this.
I've followed Eggleston's work since it introduction in 1976 at MOMA. In the next 5 years or so, I expect it to rise 1.7x to 3x in value. Same with his out of print books.