So Nvidia has Gsync out in the market already, AMD is pushing FreeSync, so where does the leave Intel?
I personally think Intel will create their own technology like FreeSync that uses the VBLANK standard. Intel was at one point interested in AMD Mantel so I don't think they have a problem checking out new technologies.
I think Intel will just use FreeSync since AMD has said that FreeSync is a part of DisplayPort 1.2a standard and since Intel likes to play nice with standards they will probably just use FreeSync. Intel might also use FreeSync just to poke Nvidia.