Earlier today, the Australian and UK versions of the Nexus 4 smartphone sold out within minutes of being up on their respective Play Store destinations. It looks as if the same thing happened for the US versions as well. Both the 8GB ($299.99) and the 16GB ($349.99) versions of the Nexus 4 are now listed as "Coming Soon" on the US Google Play Store site. All we can say is, "Wow! That was fast!"
Here's a link in case you want to pre-order instead: https://play.google.com/store/devices/details?id=nexus_4_8gb
Source: Nexus4Forum