Update 2: For those of you who bought your Nexus 5, it showed that it would leave the warehouse by November 5th. I received an email last night showing that it has ALREADY SHIPPED! It should arrive by tomorrow. So check your emails.
Update: Delivery estimates have been extended to 2-3 weeks for the 32GB and the 16GB in both colors are listed as out of stock.
The Nexus 5 just went on sale: Playstore
Hurry and buy it while you can. Nexus device launches are notorious for being sold out quickly.