Rumors of a more powerful variant of the HTC One M9, dubbed the HTC One M9+ for China have today been backed up by an official press invitation to a Beijing event in April.
The "More than One" invitation (see the below image) suggests the Duo Camera feature is making a return. Rumors and leaked images lead us to believe this device could sport a QHD display, MediaTek MT6795T 64-bit octa-core CPU, 3GB of RAM and the same 20-MP shooter found on the HTC One M9.
That's pretty much all we know at this point in time. While everything still remains rumor and speculation, we're at least seeing official material from HTC. We'll have to wait for the April 8 "More than One" event.