Well, sounds like Google decided to go ahead and announce its new Nexus devices without the fanfare or mega-event today, and just spill the beans to the world via the web. First to be announced was the Nexus 4, by LG.
Basically, this confirms everything we've seen thus far - it looks exactly like the leaks, has the same specifications, and will come in 8GB and 16GB flavors, at $299 and $349, respectively. And no, there's no SD card slot. Availability for the US, UK, Germany, France, Spain, and Australia is slated for November 13th.
The Nexus 4 is a GSM HSPA+ pentaband device, and will launch with one carrier partner: T-Mobile.