[caption id="attachment_678" align="aligncenter" width="560"] Current Nexus 4
Credit : T3[/caption]
[caption id="attachment_680" align="aligncenter" width="560"] Is this the Next Gen nexus Smartphone?[/caption]
So, To put it clear, till now there have been no official announcement of a new Nexus device except maybe, the Google version of the Galaxy SIV.
However, I spotted a Strange Nexus device in the New Google+ Ad which is very similar to the current nexus 4 but with a signficantly smaller bezel
You can check it out at 0:37 of the video above.