I'd have taken GW digital a decade ago and tossed out the old pen and paper paradigm as soon as it became technologically viable to do so. (ie: once pc and/or smart phone ownership had reached appropriate market saturation, which was some time ago, especially for the target demographic of miniature games.)
I guess there's the chance of alienating your long time fanbase, but I don't think most kids who grew up in the 80s onwards have an overly difficult time figuring out PCs and apps.
Uh... wut?
I'm totally going home and rummaging through what's left of my IoB box to see if this is true. To be honest I didn't spend any time looking through any of the publications that were provided, but I'm almost certain there were stats provided for all the units. Maybe not the most correct stats with all the special rules, but there were enough stats to play a game.
There's a booklet that comes with the abridged rules to alow you to field both armies (stats, background etc). It would be a little short-sighted of GW to give you a game that you couldn't play with something so fundamental.
Funny, 'cause my box didn't come with stats. I had to dig through the "Read this first" book to find a url which took me to the website where I could print a stat sheet. IoB is a mess.