Maybe they will do something like sata for computers, which initially had the same problem and fell out way too often. Some sort of extra tension on the cable is what I have seen, ala a steel clamp arrangement on the connector.
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Current: Denon 3311ci, Anthem PVA 5A amp, Ascend Acoustics Sierra stereo mains, Ascend Acoustics 340 center, Aperion Surrounds, LG Plasma