What Are Amendments, Errata and FAQs?
It's helpful to people's understanding of these documents that we provide a clear distinction between Errata and FAQs.
Errata provide corrections to the errors that sometimes creep into our books. It is important to note that Errata carry the same 'authority' as the main rules and permanently modify published material; where one of our books says one thing and the errata changes this to something else, the errata takes precedence as the 'correct' version of that material.
Amendments are changes made to our rules in order to make them work within a new context; the most common example would be when a new core rulebook is released which then has a knock-on effect of invalidating existing material. They are not designed to fix newly created weaknesses or shortfalls, but simply to ensure that no rule, unit, item of equipment or whatever else is left incompatible with the current edition of the game.
FAQs, or Frequently Asked Questions are grey areas, points of confusion or places where rules can and have been interpreted in conflicting ways. For each FAQ we provide the answer as determined by the Games Development team; while these are not hard and fast rules text in the same way as Errata, they should be considered the 'official' interpretation.
-GW Website