The don't care about SoB.
Phil Kelly was quoted as having ideas for the army about a month ago, and that there are people on the Dev team who play the army. We've seen Matt Ward can actually write Sisters decently if he's writing their fluff and Cruddace collects them.
Who doesn't care about them again?
It's too expensive to make the models right, not enough people will buy them, they have warehouses full of pewter models, unsold.
Enter the Citadel it was said on record
that Sister hadn't gotten plastics due to a lack of equipment that was good enough to handle what they're trying to do with them. They also said that problem has been fixed.
Furthermore, by GW's own financial sheets the molding equipment depreciates completely every 4 years, so they look at replacing it for better equipment about that time. We saw this last years when they bout new equipment that let them get even more detailed and showed it off as part of the Hobbit stuff.
Dark Eldar, Necrons and Grey Knights didn't really sell before their reboots either.
Oh and GW hasn't been keeping a high stock of Sisters models for a while now or they wouldn't keep running out of stock every so often. Instead they do small batches of them as needed.
Frankly if you expect really anything besides a reprint of the WD with errata and FAQ changes then you are setting yourself up for disappointment. Now if it actually happens, by some miracle of the Emperor, that they get something more then you can be happy after seeing it happen.
The blurb about it says "...includes all the background, photography and rules (all updated for Warhammer 40,000 6th edition, including Warlord traits)...". From that we can infer that it will
- Hull Points
- Warlord Traits
- Relics (at least on the SCs)
- Errata Changes from FAQs
- Rules changed to now be the USRs
- Seraphim losing their shooting rule as it's covered by Gunslinger
- New pictures (since most of the existing ones date back to 2nd Edition and the terrain of the time)
What we don't know if it will have:
- The old background worked back in (a lot was left out)
- Points adjustments
- Generic Relics
- More wargear
- More options
We've got evidence that they're giving us something and they didn't just give us a poorly converted PDF and ask for our money. Let's at least
wait until the preview hits online (assuming the full release doesn't go live at the same time) and see if anything is different before we start pissing and moaning already. FFS show some dignity and at least wait for the actual digital codex to drop before we start passing judgment on it.
And people wonder why everyone sees Sisters players as a bunch of whiny gits. Yeesh. Quit making us all look bad already.
This kind of throws a spanner in my plans: I was going to buy up some imperial guard to use as allies (or to use as main with sister allies), but now that we're getting a digital codex and the rumours of being shoved into an "Inquisition" codex that also features Grey Knights and will most likely use their ally chart means I'm not so sure of that any more.
Still, I'd be very glad if "Inquisition" gets all shoved in one place for simplicity and variety's sake, and hope the new codex will feature some tweaking even if I know there's no new models coming. Now I'll have to wait instead of investing.
Inquisition rumor was debunked a long while ago, and it never made sense anyways. The book would be a bloated and disjointed mess.
That doesn't rule out a return of the Ordos Hereticus to the army though as we may see them reintroduced in this digital codex, depending on who wrote it and all.