1:15 pm MT: At this hour, we know Chelsea Clinton will narrate a short biographical video on her mother. And we're told a mystery guest will introduce Sen. Clinton herself.
Chelsea was just spotted in the convention hall, during the walk-throughs where speakers get acclimated with the surroundings.
Hmmm . . . May we actually hear Chelsea Clinton's real-life voice today?
No confirmation by the campaign -- everyone likes surprises, even surprising that aren't all that surprising.