"Ceres' surface is heavily cratered, as expected, but appears to have
fewer large craters than scientists anticipated. It also has a pair of
very bright neighboring spots in its northern hemisphere. More detail
will emerge after the spacecraft begins its first intensive science
phase on April 23, from a distance of 8,400 miles (13,500 kilometers)
from the surface, said Martin Hoffmann, investigator on the Dawn framing
camera team, based at the Max Planck Institute for Solar System
Research, Göttingen, Germany."
So the mission will START its first science phase on April 23, which as I write this is still 9 days away -- and it may be days after that before it gets a clear image of the bright spots. So this is what we know to this point:
The bright spots are bright spots. And there are two of them.