Looks like Carphone Warehouse messed up again. Before the Nexus 4 was announced a couple of weeks ago, some Carphone Warehouse stores had put up their marketing material, way ahead of time. They also put up a pre-order page before Google announced the new Nexus device. Now it looks like they've messed up by adding an option for a White Nexus 4.
Perhaps Google and LG are looking to release a white Nexus 4 soon? Or this could just be another error. Either way, we suggest you take this with a grain of salt. Because it is a rumor. Right now Carphone Warehouse is selling the device in the UK for free starting at £31 per month on O2, Vodafone and Three. If you were unable to pick up one of the Nexus 4's from the Play Store earlier today, you may want to try Carphone Warehouse and see if they have a few left.
If Google does release a White Nexus 4, would you want to pick it up?
Source: Carphone Warehouse