HTC has quietly unveiled a new smartphone, to everyone's surprise.

The unexpected phone is called the HTC One S9, and it was first discovered on the Taiwanese company's German site. It is definitely a One-branded device in not only name but also design, as it features an all-metal enclosure similar to the One M9, while on the front we can see a One A9-like glass panel.

It appears to be a mid-range device that is currently only sold online. There's a 5-inch 1080p screen, 13-megapixel rear-facing camera, 4-megapixel front-facing camera, 2GB of RAM paired with a Helio X10 SoC from MediaTek (clocked at 2GHz), 16GB of storage with expandable microSD, 2840mAh battery, and stereo BoomSound speakers.

There doesn't seem to be a fingerprint scanner whatsoever. Still, it's a decently-specced phone that comes with Android Marshmallow right out of the box.

Unfortunately, the One S9 may be a Europe-only phone. It's priced at €499 ($565) and should available in gold, silver, and black colours.