They might be waiting for tablets etc. to become just a tad more advanced so that they can stuff their basic line-up of processors in there, as well as offer mobile processors for mobiles.

But could it be that we're at a spot in time where everything is converging towards mobile, which is all the time becoming more and more like traditional processors? I mean decreasing power consumption must've been a priority since forever, so is there really a difference (soon) between mobile processor and a "ordinary" processor?

Just talking out of my hat here, I have no expertise in the field.