HTC tried to sneak this one out, but nothing gets by on the internet. HTC listed the One E9+ on its Chinese website with a breakdown of its specs.
However, there seems to be some confusion as the specs differ between the feature page and the specifications page. This has led to speculation that HTC's current specifications page for the One E9+ is actually meant for the One E9 sibling. There have been multiple rumours and leaks about the One E9 over the last few weeks, but nothing has been confirmed.
The listing says that the One E9+ will have a 5.5-inch full-HD (1080x1920 pixels) display, a 64-bit octa-core 2.0GHz MediaTek MT6795M processor, 2GB RAM and a 13 megapixel rear camera. These specs may actually apply to the One E9, as the One E9+ is expected to arrive with a qHD display, 3GB RAM, and a 20 megapixel camera.
HTC is hosting an event on April 8th where it is expected to announce the One M9 Plus and the One E9. The One E9+ may also have to be added to that line-up.