I would be very surprised if stock becomes available after 2 weeks, with the popularity these will have I fully expect massive price increases due to tiny stock allocation, with week upon week, maybe leading to months before retailers list them as in stock rather than pre-order. Even worse than the 980ti or the TitanX have been.
Let's face it, the card is looking like it'll be a little faster than a stock ti, but not 30pc faster or anything. If stock is so short people will just buy the ti.