CN Rail has added two trains to Halifax. Q122 and Q123 begin this month, joining existing trains Q120 and Q121 (inbound and outbound respectively) . The trains offer 26-hour service to Montreal, 35 hours to Toronto, and 56 to Chicago.
CP has actively been marketing the Port of Saint John, so this improved service is seen as a way to compete.
CN also announced 15million in maintenance in Nova Scotia in the coming year, including replacing 4 miles of track, and several level crossings.
I previously posted an overview of Halifax area rail operations