The HTC One M8 is now six months old. But HTC is certainly developing a successor to the M8, which may or may not be called The "One M9" or may be the "One M+"... Who knows!
Of course, HTC hasn't confirmed anything about this, but we heard that an M9, and even an M9 Prime could be released in early 2015. Until and if that happens, allow us to introduce you to a new as opposed to the old ones HTC M9 concept design that might not be too different from a real HTC-made device.
This new HTC M9 concept proposes a 7mm-thin body made with aluminum and titanium. The imaginary handset is obviously a high-end one that brings improvements over HTC's current flagship. Its display should be a 1440 x 2560 pixels (Quad HD) sapphire crystal one. Other features: BoomSound+ speakers, 5.1 MP front-facing camera, 12 MP Duo rear camera with Optical Image Stabilization, Qualcomm's new 64-bit Snapdragon 810 processor, 3 GB of RAM, and a 3500 mAh battery. Storage space varies from 32 GB to 128 GB.