It looks like HTC may be planning to unveil a new product in the Desire series at CES 2015. The Taiwanese manufacturer has shared an image with the tagline "Always Desire more" on its social media channels in China, along with a reveal date of January 6.
Other than that, there is no indication as to what HTC is planning for CES. We will be on the ground covering the event exhaustively, so be sure to stay tuned for more on the upcoming product. HTC has been focusing its attention on the mid-tier segment this year with offerings like the Desire 816 and more recently the Desire 820, which offers a 5.5-inch 720p display along with a octa-core 64-bit Snapdragon 615 CPU:
Source: Weibo (HTCLife)