For any of our users who still want to grab themselves a Nexus 4 but haven't yet, Google is trying to make things easier for you. First, it looks like the supply issues are mostly ironed out. The device is still selling in the Play Store. Second, they just launched a store located web-page to help you track down the closest location to you in which you can get one. For now it only shows T-Mobile stores, so it's usability is limited. Still, if you are on this carrier, or where looking to switch, then this could be useful.
Here's a link to help you out: Nexus - Google
Source: Twitter - Google Launches Nexus 4 Locator Site