Many questions and many answers. Image from source..
UNIT CHANGES
Q: Does Cassius have the Zealot rule?
A: Yes
Q: Do the AA tanks have an alternate fire mode that lets them shoot at ground targets?
A: No
Q: Are Techmarines slotless HQs like the DA book?
A: Yes
Q: Do Sternguard combi-weapons still cost 5 points?
A: No, they’re 10 points
Q: What is the cost of a five man scout squad with a Vet Sergeant?
A: 65 Points
Q: Do bikes and centurions get combat squads rule?
A: Bikes yes, Centurions no.
Q: Is there is any vehicle able to get grav weapons?
A: No
Q: How many points cost a grav-gun as special weapon on a tac squad?
A: 15 points.
Q: How many points are the lascannon and missle launcher upgrades on the Centurion Devastators?
A: Lascannon is 10, Missile is 10
Q: How much do Relic Blades Cost?
A: Chapter Master and Captain get it for 25 points.
Q: Can Tactical Marines take a Special Weapon at 5 models?
A: A Squad of 5 can have a special weapon or heavy weapon.
Q: Bikes squads that can be made troops, a minimum of 5 models or 5 models max? there is some conflicting sounding information so people just want to confirm.
A: At least 5 (max 9 with Attack Bike) and if your Captain or Chapter Master is on a bike you may take them as troops.
Q: So Chapter Masters on bikes can unlock bike squads of at least 5 models as troops too?
A: Yes.
Q: Can the Bikers take the grav gun options?
A: Yes
Q: Can Scout Squads take locator beacons or teleport homes?
A: Teleport Homers.
Q: The Stalker, does it have 4 shots total that it can split fire with or does each gun fire 4 shots each?
A: 4 shots each
Q: Does the Emperor’s Champion take up an HQ slot?
A: Yes
Q: Any change to Razorbacks?
A: 5 points more
Q: Are normal bikes cheaper?
A: Yes
Q: Can any of the HQs get Camo Cloaks?
A: No
Q: Can any of the HQs buy any special rules?
A: No
Q: Do the HQs still have access to Hellfire rounds?
A: No
Q: Have Razorback weapon upgrades gotten cheaper, more expensive or stayed the same?
A: Some went down.
Q: How much do Relic Blades cost for Honor Guard?
A: 10 points.
Q: Are the Drop Pods priced like the DA ones (to include upgrades)?
A: Similiar.
CHAPTER ABILITIES
Q: Do Chapter Tactics cost anything?
A: No.
Q: When making an army, are you required to take a chapter trait?
A: Yes.
Q: Does the Ultramarines Tactical Chapter Tactic affect Sternguard special ammo?
A: I believe so.
Q: Is the Exorcists Chapter covered in the list of different Marine chapters/successors in the book?
A: Yes, but they do not have a parent chapter.
Black Templars
Q: Have black templars access to biker scouts?
A: Yes. They have access to everything except Librarians.
Q: Are Black Templar Characters required and/or accept challenges?
A: No
Q: How much do Crusader Squads pay for Power Weapons?
A: 15
Q: Can the Initiate in a Crusader Squad take a Power Fist?
A: Yes at 25 points.
Q: How does the limit for the extra power weapon in the Crusader squad work. Is it just 1 Initiate or is it 1 per X number of models in the squad?
A: 1 Initiate and then upgrade one to Sword Brother and you can get another.
WARGEAR
Q: How do Camo Cloaks work?
A: +1 to cover, or 6+ cover if not in cover
CHARACTERS
Q: Can child chapters take the SCs of their parent chapters?
A: No (those are unique to their chapter)
Q: Does Sicarius still re-roll his Sieze Initiative attempts?
A: No
Q: Can Pedro and Lysander be in the same army without using allies?
A: No (Crimson Fists is one chapter, Imperial Fists is another)
Q: Marneus Calgar “God of War” rule is still in there? Has it been replaced by the 3 warlord traits rule?
A: It’s different and cool.
Q: In 5th Edition you were encouraged to use SCs as “Count-As” special characters to give you some new/interesting combinations. Is there anything in the new book that allows you to do this?
A: You can no longer do that due to Chapter Tactics.
Q: BT High Marshal (Chapter Master equivalent?) Helbrecht has no Orbital Bombardment, but BT can take a “regular” Chapter Master and get the OB from him?
A: Correct, Helbrecht does not have it, but regular Chapter Masters do.