I'm not sure how I feel about people rating a book that they haven't read just because it's not available as an ebook. While I plan to wait for the ebook, I don't really consider it fair to the author or to readers who use the rating system. I can understand being upset that it's going to be 4 months, on the other hand, it's not like the books have been coming out in a timely manner anyway.
Most of the Tor titles that I'm interested in, come out as an ebook as the same time as a hardback book, so I'm sure that it's Jordan's widow. No reason she couldn't release it as an ebook at the same price as the hardback though.