The 110's weekend service is a restoration of service that was cancelled when the COVID pandemic began. It is not really "new" service in that sense, as the 110 had weekend service when it was launched back in September 2007.
It's a pretty quiet service change. October is supposed to being the shortening of route 39 and introduction of route 50 covering the Lisgar portion of route 39. However the proposed change has generated some complaints about the loss of established service (in other words, people used to the one seat ride of the 39) and the local councillor has her thumb on the scale, suggesting at a council meeting the change shoudn't happen and sending out surveys to residents about the change. I hope the change happens, because the 39 really needs to be shortened and have more frequent service 7 days a week given its current ridership profile.
I think the 2026 budget might be one with fewer net new service hours for transit. While ridership is higher than pre COVID, there is clearly a drop off in ridership that started in the second half of 2024 that can be attributed to reductions and restrictions around international students. Leisure travel on evenings/weekends also seems to be down. The city is going to have a challenging budget year and after 2 years of 7-9% annual property tax increases there is some pushback forming and there will be political pressure to deliver a budget with a much lower tax increase in 2026. Even though a lot of it can be attributed to regional services and the police, the fact is the city budget is far easier to implement spending limitations and/or cuts.