Facebook phone is always rumored to possibly be true, it comes form the HTC through HTC Myst Android Jelly Bean smartphone
HTC Myth is packs with 4.3-inch screen size with 720p display, packs with 5 megapixel rear camera and 1.6 megapixel front-facing camera, sports with LTE, 1GB of RAM, 16GB of internal memory and powered by MSM8960 1.5 GHz dual core processor. But there is another rumors thats says the HTC Opera which seems to be the old name of the HTC Myst.
Previously, HTC has been released the HTC ChaCha which has dedicated Facebook button. So the possibility of HTC Myst will also be integrated with a shortcut key to access Facebook site.