Parliament will sit for the first time this year in the first week of Feb.
Sitting Calendar - House of Commons of Canada
www.ourcommons.ca
In a worst case scenario, lux tax would be one of the first items on the agenda - could be, but unlikely with all the more pressing issues going on in the world. Then once the bill is passed, I don't think the tax starts right away, they'll have to set an implementation date sometime in the future, enough lead time for dealerships to work out the details, etc. I have no basis for this but I'd say it would at least have to be a month.
So maybe we have until end March, on the worst case side? Just an educated guess... 1 April is new fiscal year, so that might be a target date.
And I'm still somewhat optimistic that enough of us pushed back during the consultation phase to try and have EVs exempted... Given the current government's intent to make all new cars fully electric by 2035, it might be something they'll consider.