well yes, I think that's the idea.. basically anything that is not obviously loyal = heretic astartes, whether they are pledged to a particular Chaos god or just got grumpy and decided to forge their own way...
slightly odd way to put it, but, for example, the Fallen aren't actually Chaos Space Marines
Unfortunately nothing until the books drop. BS will be unusable for 8th until the app is released outside alpha AND we get things transferred over. I'd give anyone who asks you a reasonable estimate of a month after release.
Jon's already got the alpha out - so I'm not worried about that part moving along, but we'll be re-writing every single cat/entry once the books drop and really will have no way to do it ahead of time, so I'd say a month is a good estimate.
@Kohato Only these five books (which are just a collection of datasheets, nothing more) are called Index, a faction book will still be called a codex and these will appear after launch.
@Kohato I'm guessing Ynnari will just be the three models plus a list of Craftworld/Drukhari/Harlequin units that can be used to build a list with. Basically these Indexes just translate current datasheets to 8th edition datasheets, just to tie you over until the codex for your preferred faction arrives.