From AMD's perspective, yes. AMD isn't going to integrate x86 and ARM anytime soon coz as of now, x86 instructions cannot be ported to arm or vice versa. You need some sort of a library to use arm specifically completely ignoring x86, if both chips are combined.
As of now, only nvidia has plans of doing so with help of its cuda platform. Cuda has been programmed for ARM instructions. That means ARM cores can now run cuda along with tesla/quadro and geforce. NVIDIA calls it CARMA (
Cuda in
ARM Architecture).
According to nvidia, ARM's upcoming 64 bit A5x cores are going to find its place in the upcoming MAXWELL gpu's. They will handle gpu compute using cuda and will be the fundamental compute resources leaving rendering part to the gpu. Nvidia also has announced project denver based Soc's that has arm 64bit cpu's with maxwell gpu's be targeted towards tablets, smartphones and convertibles. They will also make their way into servers and HPC computing.
Nvidia: Next-Generation Maxwell Architecture Will Break New Grounds - X-bit labs
NVIDIA CUDA for ARM: Removing X86 From GPU Computing - Bright Side Of News*
These are early dev kits
MEET
They have already planned a lot of things after gaining the architectural license. ARM is going to be a huge player.
Nvidia and ARM: It's a parallel, parallel, parallel world
Big changes coming to the CUDA programming model
Project Denver Nvidia's major custom 64 bit ARM architecture.
Nvidia gets ARM architectural license, will integrate GPUs
Little off-topic but interesting ARM related news.