Believe it or not, we are now just four days away from the official unveiling of the oft-leaked, oft-rumored, and much-teased HTC 10 smartphone. Now that we're getting closer and closer to the big day, HTC is ramping up its teaser campaign posting new videos every other day.All of HTC's teasers so far have done a great job at overpromising things (be they related to the camera, audio capabilities
