WATERLOO REGION — Kitchener may be left off the list of places getting more commuter trains this fall. But the Ontario government has pledged to study a business plan that supports bringing commuter trains to Cambridge.

"I think you'll find that (Transportation Minister Steven Del Duca) will some time in the fall be making some announcements on improvements for the Region of Waterloo. I'm going to leave it at that," Cambridge Mayor Doug Craig said.

Craig met with Del Duca and others in July to argue for bringing commuter trains to Cambridge. An updated business plan argues that it's feasible to do this from Milton, for a launch cost that starts at $21 million and rises, depending on the option chosen.

Metrolinx, the government's transit planning agency, said it's analyzing the Cambridge commuter plan, and Del Duca has committed to "providing an update" later this year.

Meanwhile, a news report published Monday said the government plans to expand GO Transit trains on the Kitchener line after Labour Day. But the new trains would not extend to Kitchener, which currently has two round-trip trains per weekday. Rather, new trains would operate between Toronto's Union Station and Mount Pleasant, east of Georgetown.

Metrolinx would not confirm new trains coming after Labour Day, pending an announcement later this month. A spokesperson said the province remains committed to its stated plan of adding two round-trip, weekday trains for Kitchener in 2016.

Here are other confirmed plans for expansion along the Kitchener line, according to the Metrolinx website:

• 15-minute, two-way service is coming between Bramalea and Union Station, on weekday rush hours, middays, evenings and weekends.

• 15-minute service during weekday rush hours is coming from Mount Pleasant to Union Station in the mornings and from Union Station to Mount Pleasant in the afternoon and evening.