So along with a confirmation of this week's pre-order list, we seem to have a confirmation that this month will not see a 40k release. That pushes us until at least the first week of October. This is rather sad in my opinion, as a Tau codex is high on my list of interest right now.
Here is the this week's pre-orders, and the latest on what is being said.
via anonymous sources on Faeit 212
I got confirmation that we will not see any 40k this month. My guess is Tau will come next month (just my guess)