Nexus 6: BoomSound speakers, 5.7in display too good to be true for Google's next Nexus device?

Will the follow-up to the Nexus 5 come be a Samsung Galaxy Note 3-busting phablet with BoomSound speakers and a 5.7-inch 1080p display?

That's what concept creator Vishal has created for the Nexus 6 in a new concept for the device that points to a 12mp camera on the back with optical image stabilizer and a dual tone LED flash.

The concept, posted to ConceptPhones, builds on the Nexus 5 but packs more of a punch in a lighter, slimmer 8mm device. 

Vishal's concept has a 64 bit processor and 3GB of RAM, as well as 16 and 32 GB of storage.  There is also a beefed up 64GB version.

The reports are that the Nexus 6 will be Google's last Nexus device before introducing a new more expensive range of devices under the name of Silver. 

See Vishal's render here

It had been rumored a while back that HTC would make the device.  Google still hasn't confirmed who will be making the Nexus 6 but the expectation now is that it will be LG and based on a device released exclusively for the Japanese market, the LG isai FL. 

The render is largely based on existing rumors, with additional expected features including Snapdragon 800 and a 5mp frontfacing camera. 

There is some debate as to whether the device will be released at Google's I/O Conference in June or whether it will wait until October or November.