Got mine now too. So just a few comments comparing the first and the new edition. I have some mixed feelings about this new book, but it is definitely a great improvement. Many illustrations are the same, but there are lots of new ones. Essentially the ones by the original main illustrator Karen Phillipps seem to have been (mostly) retained. It is mentioned that they reused more than 1000 of those again. The new ones are by a group of seven artists, and to me with one exception they all did a good to very good job. Though there are differences. The only ones I do not like are the ones of the rosy finches. Some of those illustrations are on the front cover. They look ok there, but the full plates leave a rather bewildering impression on me. It is hard for me to quickly compare species there, something a good FG should be optimized for.
The book is larger but thinner, so more species can be shown on a plate. Nevertheless, there are now 164 plates, compared to 128 in the first edition. Distribution maps and (shortened) texts are now together. But the book still does not fully follow the proven FG format with plates in one side and text/map on the same spread opposite. So while there are such combinations, there are also many plates where the corresponding text/map is overleaf or even two pages away. To me, this arrangement needs some getting used to. I got the soft-cover version, but compared to the first edition, the cover is too soft for my liking. The illustrations come now with the "Peterson" pointers, though without additional text of "Collins" fame. One should be aware that this is an eminently political book! China's borders are ending frighteningly close to Borneo, for example.