Obviously, it’s hard to look “inside” the processes at GW that greenlight these things, but I am fairly confident that Codex: Inquisition is not a product we would’ve seen without the new Digital Line of Codexes.

Adepta Sororitas? Dunno. I guess you can argue different ways there. But Inquisition is almost certainly “a bonus”. The choice there isn’t between this one Digital or not-Digital. For now, it’s the choice between Digital or nothing, with the added possibility (small as it may be) that this will translate into a print publication at some point, especially if it proves popular.

I guess they’ll release SoB and Inq as print copies later on but I’m happy with digital copies, more convenient and portable than print and easily updateable.
Just wish Google would provide a similar system to Apples bookstore so we can get interactive versions for Android as well, for me the extra value included is enough to pay that bit extra.

I do enjoy physical copies on occasion though, I’ve just ordered BL’s Ltd Ed Visions of Heresy to go along with FW’s HH books for example. Now that’s the sort of quality and feel you just can’t get from staring at a screen.

For me I want digital for convenient gaming (all the rules at your fingertips and no heavy books to lug around) and print for reference at home and when it comes to Ltd Editions just the joy of owning something that’s beautifully put together.
Both have their benefits and aren’t mutually exclusive and it’s good to see GW embrace the modern world with both hands.