There is no new information accompanying these images, but given that these shots were taken a press event probably in Vietnam, we would anticipate an announcement soon.
The Nexus 4 features a 4.7-inch HD display, quad-core processor and 2GB RAM. It is also the first smartphone to run on Android 4.2 and it has just come back in stock on Google Play stores in US, Canada and Germany. Countries like France, Spain, Australia and UK are expected to get the stock later today.
More images below: