Well, I've seen someone write a small interview with phil kelly on gamesday asking about the new starter (dark vengeance, well... it's proven anyway) and the other would be a whining when a dark eldar facing a 2+ saves can only be done by either dark lance or disintegrator and when in CC they got bummer as no weapons (except demiklaives) could take down any terminator armor now, and phil kelly rebuke him with 'why not use huskblade?' and thinking for a second or something, he finally said there will be new FAQ.
Of course that's one, but there is other interview when they said that current FAQ only address the psychic power in general (in my opinion, even this is not covered all of them) and couple of issue arise in your usual cache of games but this only because he feels that the community need to 'feel' how's the 6th edition play right now, and from that all players can input what's missing from their armies and will be address in new FAQ.
The last interview, I forgot which GW rulesmaker being interviewed (definitely not robby crudace that's for sure ), said the new FAQ will be on september....
have a thought to back this up guys... though I know, it will be proven in next 2 days