Currently only Fnac is showing a ship date, but both ereaders are officially supposed to get released on 6 September and should ship on that day. Fnac, on the other hand, is promising to ship on 1 September, and several longtime Fnac customers swear that Fnac's estimates are usually spot on.
I have yet to find or hear reports about pre-orders in other markets, sadly.
So are you going to buy one?
If so, you should get it from Indigo. From what I have heard, it's faster for US customers to order from Indigo in Canada than from Kobo itself. Kobo owners over on MobileRead say that Kobo still has the same "take the order, lose the order, ship the order" process of years past.
Me, I have a Kobo Aura One loaner, so I have no immediate need to buy one. And given the disappointing specs of the Aura edition 2, you'd be better off buying the Kobo Glo HD.
But if I were going to buy an Aura One, I still wouldn't. Instead, I would get an Aura H2O.
While I like the screen on the Aura One, I also know I can find an Aura H2O refurb on Ebay for around $100. That's half the price of the Aura One for about 80% of the features.