Look at the relation...
Check this family tree I snagged off ScienceBlogs. It shows there are two lines of dinosaurs; the ones that evolved into things like triceratops on the left, and the ones that evolved into ones like T. Rex and pigeons on the right. The ones on the right developed feathers, and the evolutionary unluckiness that their descendants are now served with the Colonel's secret recipe of herbs and spices.
Now they've found Tianyulong confuciusi. It's really cute, small, and herbivorous, placing it on the far left of the family. It has a covering that looks like feathers.
If they are the same type of feathers (and the jury is still out), either its a big evolutionary coincidence...or more likely the common ancestor of dinosaurs or something close had feathers.
Imagine if almost every dinosaur had feathers; picture a downy covering off up the neck of a Brachiosaurus.
Someone this week told me they hated what the dinosaur feather discoveries did to their childhood dinos. I say, if we get more discoveries like the Therizinosaurus below, bring 'em on.
