HTC continues releasing various variants of smartphones. The recently launched HTC One A9 smartphone has got several variants released and the list of One M9 variants has added yet another model, making it even more confusing to the potential buyers.

Called HTC One M9s, the handset can be pre-ordered right now in Taiwan for TWD 12,900 ($390). Those who pre-order it will get it after November 21, when it is expected to start shipping, but there is no word on worldwide availability.

As for the changes, it is hard to track what are the real differences with this model. The chipset is a MediaTek's Helio X10 with a 64-bit octa-core processor, the rear camera is downgraded from a 20-megapixel to a 13-megapixel unit with OIS, it has only 2 GB of RAM and 16 GB of storage.