This shrub is growing in Northern Virginia (Zone 7a), and I took these photos in mid-September. It's very striking and I hope someone can tell me what it is!
Calsurf, I think you're right that's it a Viburnum species, possibly Viburnum nudum.
Its berries appear to be changing from white to purple without going through a pink stage, though, which doesn't match the V. nudum photos I've seen.