There doesn't appear to be a centralized thread about WestJet's partner lounges so I figured I'd start one to talk about some recent changes.
It appears as though Ottawa's relatively new Aspire Lounge is now a WestJet partner, making for a welcome addition to the network.
Additionally, Montreal's Air France Lounge has been added. This lounge is described as being in the "international concourse" - is it accessible for domestic flights (like YYZ's international Plaza Premium Lounge), or is this a useless addition to the network (WestJet doesn't have any international flights from YUL)?
Internationally, the United Club at Narita is a new partner.
While most WestJet ports don't have partner (including Delta) lounges, the most notable omissions are those served by the 787s with Business Class, for which lounge access is theoretically included with the ticket. These airports are: