It looks like Google has started shipping the Google Play Edition of the Samsung Galaxy S4 and the HTC One. Both devices come with stock Android and are SIM unlocked.
The HTC One Google Play Edition comes with a 4.7 inch full HD display with a resolution of 1920 x 1080 pixels, processing is in the form of a quad core 1.7GHz Qualcomm Snapdragon 600 processor, this handset retails for $599.
The Samsung Galaxy S4 Google Play Edition features a quad core 1.9GHz Qualcomm Snapdragon 600 processor, it comes with Android 4.2.2 Jelly Bean and features a 5 inch Full HD Super AMOLED display with a resolution of 1920 x 1080 pixels, this handset retails for $649.
Source Android Central