Why is there no 1080p60 HDMI input into the SlingStudio unit?

The SlingStudio unit itself does not offer a 1080p60 HDMI input. Why is that?

The SlingStudio HDMI input port can support resolutions of 1080i60, 1080p30, and lower. However, it does not offer 1080p60 support.

If 1080p60 HDMI input is necessary for your productions, consider purchasing a CameraLink unit.