The information from TENAA says the E9 will have dimensions of 156.5×76.5x7.54 mm (6.1 x 3 x 0.3 inches) as well as a 5.5-inch screen and a 2,800mAh battery. There has been no information regarding the phone's weight.
Previously, the usually reliable Upleaks had reported that the E9's 5.5-inch screen would have a Quad HD resolution (2,560x1,440) compared to the M9's 1080p. The chipset will also be significantly different, with HTC eschewing Qualcomm's Snapdragon for a MediaTek MT6795 octacore processor running at 2.0GHz.
Other specs include a 20MP rear camera, same as the M9, as well the same configuration of 3GB of RAM and 32GB of storage. The operating system looks set to be Android Lollipop.