Currently, returning officers are reviewing their polling divisions to make sure they are adequate on the current map. They're trying to see which locations could be used for polling, as a specific location can't be reserved right away, since we don't know the date. They're going to engage with indigenous communities, where there are any.
Also, as I mentioned, we're working with post-secondary institutions to ensure that, regardless of when the election is called, there will be an offer of services on campuses. This was not possible during the last election.
We were working from a model of 338 electoral districts. Some returning officers will be assigned a new riding, and they can start to see, based on the proposed changes, how they should adjust. A lot of information sharing needs to take place between regional teams to coordinate this transition.