Google's next Nexus smartphone, long rumoured to be made by Motorola , codenamed 'Shamu', and called the Nexus X (and not Nexus 6 as previously rumoured), has been doing the rounds of the Internet for a while.

However, no leaked images had been made available to lend further credence to the rumoured device until now. 9to5Google on Wednesday posted a mock-up image of alleged Nexus X based on some details received, including purported specifications.

At first glance, the mock-up image of the next Nexus makes the smartphone appear to be an elongated version of the second-generation Moto X and shares a lot of similarities in terms of design such as same aluminium bezels and the camera set-up. There are visibly a few differences between the purported Nexus X and the Moto X (Gen 2), especially in the physical buttons placement as the former has power and volume rocker moved down a bit, which can be credited to the 5.9-inch screen size.

(Also see: Google May Launch 2 Nexus Smartphones This Year: Report)

One of the notable features missing in the mock-up image is the Nexus branding, which the report points out will be present on the final version of smartphone alongside the legendary 'M' logo for Motorola.

Some of the purported specifications include a 5.92-inch QHD display with a resolution of 1440x2560 pixels (translating to an impressive pixel density of 498ppi), a 3200mAh battery; a 13-megapixel rear camera with 4K video recording capability; a 2-megapixel front camera; a Snapdragon 805 processor, and 3GB of RAM.

(Also see: Motorola 'Shamu' Nexus X Arrives in India; Moto X+1 Gets Pictured: Reports)

While some of the specifications for rumoured Nexus X tipped by 9to5Google are in-line with previous reports, one of the biggest changes is the screen size as 5.2-inch display was earlier rumoured - though it fits in with leaks pointing to a second, larger Nexus.

A report on Tuesday suggested that the much-anticipated successor to the Nexus 5 alongside the next Nexus tablet, believed to be manufactured by HTC, would be unveiled by mid-October.

Further the report believed that both the new Nexus devices will be introduced alongside "a new software initiative" (most probably hinting the final release of Android L) either on October 15 or 16, citing 2 different sources familiar with Google's plans.