Yes, those little white fizzy things are still on the tree limb. After posting pictures of them a few days ago I had a response from Rebecca of In the Garden telling me they are Longtailed Mealy Bugs. I think she is right and what I am seeing is the nymphs. They have changed since I first saw them. They suck the juices from plants and are great pests in a greenhouse. Outdoors they mostly live on fruit trees.
Since I don't have a greenhouse or any fruit trees, I guess I will just leave them alone.