HTC is planning to introduce their next flagship phone preferably the successor of HTC One (M8) at this year's MWC tech show in early March 2015. The invites for the launch event are already sent and everyone is expecting HTC Hima ( One M9) at the event.
Although HTC seems to have a very busy schedule, it is planning to make new series of smartphone with a new mobile OS. According to a new leak from @Upleaks, HTC is trying to make new range of devices with Firefox OS.
Last year the Taiwanese manufacturer built budget friendly smartphones with MediaTek chipsets. This product lineup is unexpected and completely new from HTC. Like the same, the top smartphone maker is planning to come up with a new line of devices running on Firefox OS.
It seems HTC developers working on porting FxOS to HTC devices, but I can’t confirm if it’s a step to production or just a test purpose.— @upleaks (@upleaks) January 28, 2015
Mozilla's Firefox OS isn't so popular like the Sailfish OS (Jolla) or the upcoming Tizen OS. All the smartphones that used Firefox OS were all budget friendly with low-end specs. LG, ZTE, Huawei and Alcatel had released Firefox OS based smartphones.
Out of all these smartphones the only high-end smartphone running on Mozilla's mobile OS is LG Fx0 which boasts a transparent shell and a home button decorated with Firefox's logo. It sports a 4.7 inch screen with 720 x 1280p and runs on 1.2GHz Quad core processor. It has 1.5 GB of RAM and 16GB of internal storage.