Increasing the performance

I´m pretty sure Intels Skylake(with DDR4 compatibility) will do the job.

What was the plan for DirectX? (forgot that over the time....) If the plan is to implement a DirectX method, is DirectX12 considered?

Probably won't as it seems to be just another 5% improvement + new instructions and nothing more. And DDR4 doesn't make a difference as memory bandwidth is not bottleneck at all. They keep focusing on their integrated GPU, 4 cores is still the limit for consumer models.