Nokia receives design patent for phone with big camera hump, but it is not a new Lumia model
Nokia 801T made for the Chinese market. The device has an 8MP camera which does protrude slightly, and was released in September 2012 for China Mobile's proprietary TD-SCDMA 3G network. That is similar to the move made by Nokia to offer the Nokia Lumia 920T for customers of the world's largest carrier.
While the hoped for Nokia Lumia model with a new PureView sensor has been dashed for now, perhaps a new model along these lines will eventually be released by the Finnish manufacturer.
source: Espacenet, 3DNews (translated), NokiaPoweruser via WMPoweruser