I ended up receiving this as a birthday gift, and have only gone through things briefly so far, but already my favourite map is the Federation Historical Map, I'll be putting that one up on my wall. The booklet is very interesting indeed as it is written in-universe.
As mentioned above, I'm unsure what the point would be in releasing a digital edition of this. The book is a companion to the maps, not really a separate thing, and the selling point of this entire thing are the maps themselves. I suppose you could "enhance" the maps with media. I believe 47 North released a multimedia enchanced version of The Jedi Path earlier this year which looked really intriguing. I think Del Ray has done the same with a couple of their recent Essential Guides. That'd probably be the only way you would be able to release a digital e-book version.