Okay, not completely live. You still can't order them, but they are there. The Nexus 4 bumper comes in black only right now, and available for $20. Which coincidentally it more expensive than the Cruzerlite Androidified cases that went up for pre-order this morning. Now it's also listed as "coming soon" much like the Nexus 4 and Nexus 10, at least on the US Play Store. But I have heard from some people, that it won't ship until December 12th.
I don't know about you, but these bumpers are a lost cause for me. I'm not sure why I'd want one. But hey, I'm sure there are people out there who want one for their shiny new Nexus 4. If you're one of those people, go ahead and check it out from the link below.