As promised, the HTC One and Samsung Galaxy S4 ëGoogle Play Editions' have gone on sale to US customers only through the Google Play store. The Galaxy S4 was the first of the devices to be revealed, making a surprise debut at Google I/O in mid-May, while the HTC One version was revealed a couple of weeks later through an HTC company blog. There are also rumors that Sony is preparing its own ëGoogle Edition' of the Xperia Z, although any launch details of the purported device have yet to surface.