According to Helsingin Sanomat today https://www.hs.fi/talous/art-2000009204918.html AY plans to outsource cabin crew on routes to Thailand and "North America", which in practice means the US, but I read this to mean any potential new routes to Canada, as well.

Should this happen, AY will use outsourced CC on all longhauls except DXB, ICN, TYO and what's left of mainland China. Sad.

The article states that AY will try to negotiate with their own CC first to see if they'd accept worse terms and frankly gives the picture that AY is blackmailing their CC.