It appears that HTC has something it wants to show off to the world next week as the HTC Taiwan Facebook page has published a teaser image that indicates the company will ba announcing something on the 20th of March.
The image itself doesn't seem to hint at the nature of the announcement, as it merely mentions that "Spring is coming". Accompanying the image is an update by HTC that claims that the company would be "giving you an unexpected surprise" during the announcement, so we don't really know for sure what is going to happen on the 20th of March.
While HTC is being vague with the nature of the announcement, many are speculating that the event in question will see the debut of the HTC 11, HTC's flagship smartphone that is supposedly powred by the Snapdragon 835 chip. Apart from that, there are also speculations that the event will involve the HTC Vive is some way, shape or form. Of course, the only way to know for sure is to wait for the proper announcement on the 20th.
Source: Android Authority