Can you elaborate on your point about ARM and Thumb-2. I am not quite following you.
My point is that IF Samsung is ONLY providing global task scheduling that allows Cortex-A15 and Cortex-A7 cores to be freely assigned tasks THEN that is not really very heterogeneous as this different implementations of the same ISA.
But it remains to be seen whether the Samsung software allows more than that.
The press release doesn't say that HMP is only supported on ARM and not Thumb-2, so where did that claim come from? Any software can switch between ARM and Thumb-2 seamlessly on a per function basis. So it isn't even possible to only support ARM but not Thumb-2.