I'd imagine if WS had more 787s coming in they'd first increase frequency on exisiting routes (like ICN, BCN, DUB) before adding new ones.
In other news, WS announced a new destination for winter. Tulum (TQO), Mexico flying weekly on Saturdays starting November 9th:
WS2320 YYC 08:55 - 15:40 TQO...