Let's skip the talk of how excited I am and jump right into why we're here: the Sisters of Battle are getting updated, as we all know, but there is a bit more than what's in the White Dwarf:
1. GW renamed the "Sisters of Battle" to "Adepta Sororitas" on English sites.
2. They are getting a release on the 19th according to the GW Newsletter: "Codex: Adepta Sororitas
Sentinels of Terra isn't the only new Digital title on its way later this month. From the 19th October, Codex: Adepta Sororitas will be released as the first digital exclusive codex. As a thank you for signing up to our newsletter, you lucky people get to be the first int he world to see the stunning new cover of the codex."
3. When asked about the codex at Games Day, Robin Cruddace was quoted to say that in addition to Warlord traits, the dev team looked at making faith points scale and did "some minor point tweaks" so this looks like it might be a modified WD Dex, not a full new dex.
4. Games Workshop Digital Editions Facebook posted this on what's in the book: ""It's certainly based on the White Dwarf Sisters of Battle Codex, but with new additions to bring it in line with the new books. Things like Warlords table, new Ecclesiarchy Relics and an Altar of War.
There's also new artwork and an expanded background section." They also claim if they get 100 likes they'll release more info on the codex: https://www.facebook.com/GamesWorkshopDigitalEditions/posts/168633373331503:0
So that's what we know right now. We'll have to wait and see for what we're getting.