Looks like the device section of the Play Store is getting reworked a little bit. Cruising through the main page you will no longer see a separate section for the Google Play Edition devices (GPE). Instead they have been grouped together under a Phones & Tablets listing.
You can see the HTC One and Moto G are still present and accounted for. However, the Nexus 7 seems to have been retired leaving your only purchasable tablet from Google through the Play Store as the new HTC Nexus 9. I am not so sure it was time for it to go though. The Nexus 5 is still holding in there, although we aren’t sure for how much longer. It would be nice to have them both there for a few more month. Wish Google would give a device retirement heads up or something. It does appear that the Wi-Fi Nexus 7 landing page is still live, but purchasing is closed off.
Those looking to get a Nexus 7 will have to resort to other methods like Amazon where you can get the 16GB for $198.99 or the 32 GB for $247.58 or over at BestBuy.