In related news: Ottawa announces $758M in funding to help pay for new Line 2 subway trains https://www.cbc.ca/news/canada/toronto/city-replacing-line-two-subway-cars-federal-funds-1.7397051

Around the 19 minute mark Verster mentions opening in the new year (no specific quarter) but mentions 'revenue demonstration service' (his voice wasn't clear at that point) early in the new year, so, that at least sounds promising.