Isabelle has actually been doing that for me since the 2.0 update!
She's announced Redd, Celeste, and a bird that may have washed ashore. A trick I also do to find out who may be in town is do the stretch (Resident Services is close to my home) and usually the visitor will join in.
Park Ranger at Patagatcha National Park
Keeping the peace for all critters and Animal Crossing villagers!