I just bought the revised version on Amazon... we'll see what got fixed!
I, too, would like to know what is different. Do the revisions go beyond typos and grammar such as factual corrections? And if expanded then what's been added?
I have to say that despite its issues I quite enjoyed the first volume overall. The revised edition is also a paperback, perhaps to save costs. Will the forthcoming Seasons 2 and 3 be paperbacks as well?