So if you want the digital artbook and digital "soundtrack"* after buying the Lucin-Noir Edition, you'd have to pay another $69.99/69.99€ which is ridiculous to say the least. It's especially disappointing since LNE doesn't contain any sort of artbook and the included novel is like 19-page long printed like a slightly bigger PS4 game manual. (In total there are about 30 pages, but the novel itself is 19.) So yeah, unless you really really want the plushie and steelbook I wouldn't recommend the LNE over the Digital Deluxe Edition, especially since LNE costs $30/30€ + shipping more than it. (IMHO. for $99.99/99.99€ it should've included the Deluxe Edition.)

*Tough to call it that since it's not a full soundtrack, only 10 selected songs, and even more disappointing - apparently for the digital edition they're only providing mp3s, so no flacs.