The State Department added some categories of people who may be eligible for a waiver of the in-person interview for a non-immigrant visa. Generally, a person must be applying in their country of residence and on previous occasions, must have never been refused a visa. One is generally eligible for an interview waiver if the previous category had expired within the last 12 months, changing the previous rule from 48 months.
You can start the application process here: https://ais.usvisa-info.com/