Magic Missile... one damage roll or multiple rolls in 2024?

Are there any rules in 2024 or has there been any errata that answers the question in the title of this thread?

Nope. The wording of the spell has not changed and there has been no official ruling on it.

When I'm DMing I have people roll a single damage roll, just because that's simpler and faster.

The spell is the same, but the PHB section on damage and healing is different. The 2014 PHB says "If a spell or other effect deals damage to more than one target at the same time, roll the damage once for all of them." while the 2024 one states "When you create a damaging effect that forces two or more targets to make saving throws against it at the same time, roll the damage once for all the targets." Because Magic Missile does not involve any saving throw, some argue that you have to roll separately for each dart in 2024.