Currently, riders that want to continue to New Britain and Hartford have to transfer to an express bus operated by CTtransit at Waterbury.

[1][2] In September 2015, it was announced that out of governor Dannel Malloy's 30-year-$100 billion transportation plan, $350 million has been included to improve service along the branch.

[5] Taking advantage of the newly constructed signal system, an increase in service frequency from 15 to 22 trains per day (12 southbound, 10 northbound) was implemented on July 10, 2022.

[6] As of 2022[update], the Connecticut Department of Transportation was studying the feasibility of installing catenary wire on the Waterbury Branch.

The state plans to add accessible high-level platforms at all stations from 2025 to 2027, which would require replacing trains with buses during construction.

[15] The Waterbury Branch uses Brookville BL20GH, GE Genesis P32AC-DM, and EMD GP40-3H locomotives and Shoreliner passenger coaches.