That's obvious. For our purposes, however, it doesn't matter.
Whether Gravity propagates at near infinite speed (Newton), or whether Gravity forms an instantaneous Geometry (Einstein), the end result is that information can be transfered using Gravity faster than Light...because it doesn't matter if you are opening and closing a geometric channel, or modulating a Gravity wave. Either method will enable two vastly distant observers to communicate with each other.
Modifying a geometry and modulating a wave both convey information, after all.
I'll leave it for you to decide, therefore, whether an advanced civilization would use Gravity or radio waves to communicate across vast distances.
5 Legislative Days Left Until The AWB Expires