"Mobile" is subjective. There are laptops with desktop chipsets after all... Who stops a phone from having a set-top box chip? :)

Fair enough, but those laptops are meant to be used tethered to a power source. Set top box chips are generally far more power hungry than their mobile counterparts, just like desktop chips vs laptop chips. The issue here is that I'm not sure there's much of a market for phones that don't work on battery for more than 15 minutes.

Then again, there's a market for water-cooling blocks for phones so I guess anything is possible.

Those laptops do come with a battery, though, so someone out there is enjoying a whole 22 minutes of battery capacity.

In all seriousness, though, integration into a set top box chip is a sign of commodity: A low power chip with limited application, where it is implemented not to power a large marketing department, but simply out of potential necessity.

This is to me a far bigger indicator of "things coming soon" than, say, integration into a high-end GPU.