You'll find out next week.
That's absolutely true. However, well, that's a little bit of a problem for me. And I'll explain why, if you have some time to read it.
I live in Brazil, not in the US. Due to heavy taxes charged by the government, prices of consumer electronics here are insanely high, much higher than in any other country I know of (Steve Jobs himself called Brazilian taxes "crazy" once). For you to have an idea, the cheapest 15" rMBP costs US$ 5,000 here (the base model; the higher-end model costs US$ 6,300). While most of you are complaining on Apple asking US$ 2,200 for a rMBP, I wish I had the chance to buy it for that price. US$ 5,000 is hard to swallow. And the 13" rMBP will also be very expensive here, and although it is expected to be cheaper than the 15" rMBP, it will probably cost at least US$ 3,500.
The thing is: I'm going to the US next week. I'll leave Brazil on Oct 22 and I'll arrive in the US on Oct 23, the very same day in which Apple will hold the event. I'll stay in the US until Oct 29, when I'll come back to Brazil. If Apple launches the 13" rMBP on Oct 23 and it is immediately available to the public, I will be able to buy it the next day. But, if Apple fails to release the 13" rMBP on Oct 23 or if the product is not available for purchase right away, I, of course, will not be able to buy it.
Now here's the other thing: I'll need a laptop during my stay in the US. I have the option of taking my current 13" white MacBook with me so I can use it. If Apple releases the 13" rMBP, I could buy it, but then, if I get caught at the Brazilian customs bringing two laptops in my luggage, I'll have to pay a very heavy import tax and fine.
I have, of course, the option of not taking my wMB with me. Then if Apple releases 13" rMBP, I will be able to buy it and the Brazilian customs office will not be so severe if it catches me entering the country with only one laptop (as it's for personal use). However, if Apple doesn't release the 13" rMBP, I'll be without a laptop during my stay in the US. I could buy another laptop instead, but I'm not doing it. A regular MPB or a MBP will not do for me, as I just can't stand the low resolution of their displays, especially with the text rendering technology of OS X. Not having a retina display is a deal breaker for me in any Mac purchase.
What would you suggest me to do: to bring my 13" wMB with me to the US, or to leave it home, being confident on the immediate availability of the 13" rMBP on Oct 24? Tricky, isn't it?