Samsung took the wraps off its highly anticipated Galaxy S8 and the Galaxy S8+ smartphones last week, in its Galaxy Unpacked event. With this, the company brought its first quarter of 2017 to a close with a new product, which is already up for pre-booking.

While the smartphones seem to boast radical cosmetic overhauls, leaked prototypes hint at even bigger changes on the recently announced handsets. A bunch of new pictures of the Galaxy S8+ prototypes divulges more details about the device's back panel.

One of the leaked images clearly trots out the SM-G955F code number on the rear of the phone, thus alluding to the Galaxy S8 model. The back panel bears a striking resemblance to the Midnight Black color model and also features a dual-camera setup on the back.

Moreover, the rear camera setup is arranged vertically, with heart rate monitor and LED flash right beneath the lens. There's a possibility that the dual-camera setup would come bearing sensors of 12MP, like the ones the company decided to use in the final version. It's worth noting that smartphone makers usually test several variants of their upcoming models, meaning, Samsung may have tested a dual-camera setup on the larger variant of the Galaxy S8, but eventually decided to drop the plan in favor of a single-lens Sony IMX333 or S5K2L1 Isocell sensor from Samsung's LSI.

While there's still no word regarding whether or not, the dual-camera setup was designed exclusively for the Galaxy S8+, or both models were slated to come with two sensors, TheIndianExpress' Anuj Bhatia deemed the Galaxy S7 as one of the best camera phones on the market today. Bhatia claims Samsung has used the same Galaxy S7 camera for Galaxy S8.

In other news, the Galaxy S8 and the Galaxy S8+ smartphones now allow users to hide the app drawer thus, drawing all apps together on the home screen, according to GSM Arena.

It's worth noting that last year; the Galaxy S7 and S7 Edge smartphones came with this option, which was buried under the Samsung Labs app. This was originally introduced as an experimental feature on the aforesaid smartphones, but the Korean handset maker has now made it a mainstream feature, SamMobile reported.

In the Galaxy S8 smartphones, the app button is ON and users can choose to bring it back in case they have hidden it. Meanwhile, quite a few handset makers are now resorting to drawer-less launchers, but recently manufacturers have been giving the users free will to opt either for the classic Android way or the iPhone-style flat UI (user interface).