Question: Does this new ruling, the Skies of Fury, mean that Grey Knight Interceptors no longer have their incredibly precise descent?
Unit special/specific rules that apply during Deep Strike still apply. Descent of Angels affects Blood Angel jump units whether they Deep Strike or disembark as if Deep Striking. So they still scatter only D6. Of course, even jump units take dangerous tests now if they scatter. So much for Jump Packs slowing the drop. So if the Interceptors had the rule it still applies.
"Fetch me another plaything. This one seems to have broken." -Urien Rakarth
Space Marine- "This planet is ours, witch."
Eldar- "No ... This planet is theirs ..."