The Heritage Corridor has the lowest train frequency and fewest number of stations of any other Metra line.

An additional train runs inbound during the afternoon rush hour but as an empty equipment move or deadhead.

[8] On May 16, 2017, Metra announced that the new station for Romeoville had officially broken ground near the intersection of 135th St and New Avenue.

[10] Metra has included the possibility of extending the Heritage Corridor in their Cost Benefit Analysis report.

If this were to happen, the Heritage Corridor would continue south from Joliet to Wilmington, with an additional station in Elwood.

[17][18] Metra has offered "Rails, Trails, and Ales" excursion service on Saturdays in the fall of 2021; 2023; and 2024, and the summer of 2022.