With the start of the 2021 school year, the 38B (Scarborough Centre Stn-UTSC) branch will return to service during the midday and afternoon peak period. Additionally, the 38B will be introduced in the morning peak period to provide additional capacity to University of Toronto Scarborough Campus.

As part of the 2021 Annual Service Plan, new express service between Scarborough Centre Station and University of Toronto Scarborough Campus will be introduced in the peak periods. In the morning peak period, the 938 HIGHLAND CREEK EXPRESS will operate in the eastbound direction only, towards University of Toronto. In the afternoon peak period, the 938 HIGHLAND CREEK EXPRESS will operate in the westbound direction only, towards Scarborough Centre Station. The 38B (Scarborough Centre Stn-UTSC) branch will operate in the opposite directions to the 938 HIGHLAND CREEK EXPRESS during the peak periods.