From the original post on the Team Event
"
Updated info 06/20/2014
40K OFCC Army lists
Armies will be 2000 points and constructed from all current material available as of 8/1/2014."
so weird as it may be, unless BigTal changes that statement, some of the SW supplements/dataslates will be out before the codex itself and will be considered usable while the new codex will not.
Blame GW for their weird as hell marketing kick they've been on lately.