Of the six, two explicitly provide that it will be on-demand only.
For the others, in the case of Poland it doesn't say anything. If the Canada Revenue Agency thought it were worthwhile to entertain automatic information exchange with Poland, based on the criteria I identified earlier, and the possibility of having reciprocity—that is, getting good information for us too, because this is a two-way street, obviously—then nothing prevents the CRA from concluding an agreement with Poland to enter into an automatic exchange of information.