We are four days away from what it will be the grand launch of HTC‘s 2013 flagship smartphone and although almost everything about HTC One (formerly known as HTC M7) has been uncovered previously it appears there’s more to learn.

Unwired View has now laid hands over the black-colored smartphone, while in a post yesterday it revealed the grey one in its full glory. The website had also stumbled upon a report on HTCSource which confirmed the device’s availability details for the US. According to this report, carriers like AT&T, T-Mobile and Sprint have decided to put it up for sale from March 22. Verizon Wireless will be launching it a few days after these service providers.

And that’s not quite all. Speculations are rife that the phone will be available in 32GB and 64GB variants which will set users back by $199.99 (approx. Rs. 10,860) and $299.99 (approx. Rs. 16,290), respectively. Needless to say, these are on-contract retail charges which require a two-year customer agreement as well as qualifying data plans. Moreover, it will be available in Europe from March 8 for €649.99 (approx. Rs. 47,070) without a contract.

Additionally, it will binge on the Android Jelly Bean OS tweaked with the Sense 5.0 UI for an intuitive interface. A second generation quad core Qualcomm Snapdragon processor clocking in a speed of 1.7GHz will sit under the hood to supervise the internal working and ensure smooth multitasking. Fueled by a 2,300mAh battery, it is likely to bring a 2MP front-mounted webcam and a primary snapper with features like ultrapixels, HDR, auto focus, LED flash, 1080p video shooting and more.