The PDF of the first English supplement (translated from the French, of course), The Nine Worlds, is available now in PDF with the order for the PDF+print copy bundle also now available. I can say that, having browsed through and read a couple of sections of the book, it is absolutely wonderful and quite brilliant. Definitely worth the wait, though would have been nice to see this a bit earlier. (A year and a half is a bit of a wait, eh?) Eagerly looking forward to the physical book.
Anyway, here's what the cover of the book looks like.
Lovely stuff! :)