There is no such thing in the real world as a feathered dinosaur. The news that this non-theropod dinosaur had fibers just adds more scientific evidence to corroborate the historical evidence that dinosaurs were created, not evolved.
Although no actual feathers were found with the velociraptor fossil (or any other dinosaur fossil, for that matter), it may be that some dinosaurs had feathers. But this group of animals would merely be a kind of feathered reptile—descendants of the animals that God created in the beginning. Feathers on reptiles have nothing to do with proving that one kind of animal changed into another kind. They just show the creativity and diversity of our wonderful Creator God!