The Google Play store is now only listing three varieties of Google Play edition phones left for sale. It's unclear if the latest clearing of inventory is to make room for the arrival of new devices, but at this time those interested in a Google Play edition can select from the HTC One M8, the Samsung Galaxy S4, and the Motorola's Moto G.
Additionally, though not a phone, LG's G Pad 8.3 GPe was also removed from the Play store.
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Source: Google Play