The most recent books released from Games Workshop, Codex Space Marines and both supplements for the White Scars and the Ultramarines now have an FAQ out.
via the Warhammer Community
https://www.warhammer-community.com/2019/09/02/space-marines-faq-now-livegw-homepage-post-2/
today, we’re happy to share a new set of FAQs and Erratasfor the latest Adeptus Astartes publications, with updated rules for:
These are just in English for now, but don’t worry – our Servitors are hard at work translating them and additional languages will be available soon.