Hi Dragon Lord!
FAQ2010 is due to be posted on the GW Specialist Games Resources site shortly. It doesn't just clarify ambiguous sections of the rules, it re-writes entire sections, and it would have been much MUCH clearer formatted as a new rulebook version 1.6 (The current pdf of GW website is 1.5).
To play the current official version of the game, you will need at the minimum (from specialist games resources) the Basic Rules, Advanced Rules, FAQ 2010, Ships of the Gothic Sector, and FAQ2010. You'll probably also want the relevant fleet list expansions.
Some of us think that the FAQ took the wrong direction in places (sometimes due to pressure on the High Admirals from GW), and the Flawed Ships/Rules/FAQ threads are basically what we would do instead. These are optional rules, and will be released in various articles of Warp Rift in the coming months.
Phil K.