In most cases, drivers already know the roads that will be used because they are being used by other routes. All they will need to learn is any new curves or stops, which will be handled by the provision of maps and memos and other internal documents.
In the case of any stations with bus-only roadways however, there will be training provided to drivers closer to the opening date. This will cover things such as access to and from the platforms, clearances throughout the complexes, access to facilities, etc.
Yes, although it will require wading through several versions of the TTC's own reports to find it. Closer to the opening date, the TTC will publish new public-facing information for each route.
In the case of the 71 specifically, it appears that the only change will be that the route will enter the bus terminal at Mount Dennis - it will continue to serve the Mt. Dennis bus garage and the industrial area surrounding it.
TTC staff have been performing inspections on the cars for the past several days. Service testing is currently planned to resume on Wednesday.
Dan