It’s safe to say that Google’s new Nexus 7 has been in high demand since its announcement at this years Google IO event. With so many pre-orders, I’m sure it has been quite a challenge for Google to ship these units out on a timely fashion. Thankfully, they’ve given us an update on their current plans for shipment of Nexus 7′s that were ordered on or before July 13th. When your device ships you should receive a notification from Google Play with a shipping tracking number. Here are the specific details by country for devices ordered before or on July 13th:
In the US:
We’ve shipped all standalone Nexus 7 8GB orders (e.g.: those without a case, charger or Nexus Q). By the end of day on July 19 (PDT), we will have shipped all standalone Nexus 7 16GB orders placed through July 11 (PDT), and upgraded these orders to overnight shipping. We will process the remaining standalone Nexus 7 16GB orders by the end of next week with overnight shipping.
If you ordered your tablet with a case, charger or Nexus Q, your Nexus 7 will ship this week with overnight shipping, in some cases ahead of the rest of your order. But don’t worry, the rest of your order will be on its way soon.
We’ve shipped all Nexus 7 8GB orders. We are in the process of shipping Nexus 7 16GB orders and will ship them in 1-2 weeks.
In the UK:
All Nexus 7 8GB orders will ship by July 20 (BST). All Nexus 7 16GB orders placed through June 30 (BST), will ship by July 20 (BST). The remaining Nexus 7 16GB orders will ship next week.
All Nexus 7 8GB and Nexus 7 16GB orders will be fulfilled by the end of day on July 19 (AEST) and will arrive in 3-5 days.
Again, just keep in mind that this only pertains to customers that ordered their tablet on or before July 13th. If you ordered after that date, then you should expect your device to ship in the time frame that was quoted to you upon purchasing your device.
source: Google Support