HTC has once again teased its Desire 10 smartphone , which isexpected to launch on September 20. The teaser comes in the form of a short video clip posted on the company’s YouTube account.That said, the YouTube video doesn’t reveal many details about the device. It just shows a glimpse of what seems like the camera panel of the device. After that, the number ‘150’ appears in the video. What it exactly means is open to interpretation.Last week, the Taiwanese tech giant released a teaser video with a title, “It’s coming. 09.20 #BeEdgier”. The video shows a smartphone with a metal body design, similar to HTC’s Desire 10 Pro smartphone, which itself leaked in images online last month.HTC’s unannounced handset is expected to feature a metal unibody design and a fingerprint sensor at the back.As per rumours, the smartphone will have a 5.1-inch Quad HD display of 1440×2560 pixel resolution. It is expected to be powered by a Qualcomm Snapdragon 820 processor, paired with 4GB of RAM and 32GB of internal storage.HTC is also expected to launch its affordable Desire 10 Lifestyle smartphone. Like to have a 5.5-inch HD display of 720×1280 pixel resolution, the smartphone is expected to be powered by a quad-core Qualcomm Snapdragon processor coupled with 2GB of RAM and 16GB of internal storage, further expandable via microSD cards.For imaging duties, the Desire 10 Lifestyle will likely sport a 13MP rear camera with LED flash and a 5MP front camera. Dual front-facing speakers powered by Boomsound are also expected.HTC launched its latest mid-range smartphone – One A9s, at the IFA 2016 in Berlin, Germany. It has a 5-inch HD display of 720×1280 pixel resolution. The display is made scratch resistant with a coating of Corning Gorilla Glass. Powering the device is an octa-core MediaTek Helio P10 processor paired with 2GB/3GB of RAM. The smartphone offers 16GB/32GB of internal storage, further expandable up to 2TB via microSD cards.The handset runs Android 6.0 Marshmallow operating system topped with the company’s Sense UI. The One A9s sports a 13MP rear camera with LED flash and a 5MP front facing camera for selfies.