WVAS and WTSU are multicasting.
WTSU carries Classical 24 and the BBC World service on their subchannels, and WVAS has two music subs that I can't seem to pin down, format wise. HD-2 seems to be more contemporary R&B and the HD-3 seems to be more gospel and old R&B, but I could be wrong. I've only heard it once and that was early in December.
Despite having their bandwidth divided up for 3 music channels, WVAS is one of the better sounding HD stations I've heard.