Nexus 5

Seeing as there has been the release of Tegra 4 and with 1080p and 13 megapixels becoming the standard does any one see the coming of a Nexus 5. Afterall the current Nexus specs are increasingly becoming out dated but seeing as the demand for the Nexus 4 hasn't dropped it stands to logic that LG and google will continue to manufacture.

BUT

Since the Nexus family is natively a developer tool do you think the current specs will be upgraded? Because Tegra 4 is a given but other high end specs like 13 megapixels and 1080p don't really enhance developer experience.

Anyway just wanted to get a general opinion so I know whether to

WAIT FOR THE NEXUS 5 or BUY THE NEXUS 4 NOW?