Here's the quote from Thom Hogan, "The 17-35mm has been discontinued, but it is possible that Nikon thinks that the 14-24 plus 24-70 fill that gap. They would be wrong if they think that. There's strong need for something in the 16-18 at the wide end, 28-35 at the long end, so anything from a 16-28mm f/2.8 to an 18-35mm f/4 would be a welcome addition. " He hope's they will redesign the 17-35, and is keeping a possible redesign on his wish list, but knowing Thom, if he says the 17-35 has been discontinued, its likely from his inside sources and reliable.
I own too many Nikon lenses to switch to Canon, and hope that instead Nikon comes out with some sort of 16-35 f2.8 equiv. that has the ability to add diopters, unlike the 14-24 beautiful beast. Sadly, these camera manufacturer's have chosen that they will determine what they believe is best for the end-user and forcing us to use what they have created or wallow in for decades, versus creating what photographers are actually looking for. I guess I'll just have to get better at using primes.