I have a TPW so I am at 3300, however my TPW is more than 2 months away. My point is GM seems to have assigned me a TPW even though my dealer didn't have an allocation for me yet. In the states customers can't get a TPW until 2 weeks before the assigned build week. I ordered the photo album from the museum (NCM) and the NCM told me my TPW on March 1 which was before the March allocations were assigned. I confirmed my TPW with Chevrolet.ca chat. GM will do what GM wants to do and will not even be transparent with their dealers.
I wouldn't say that GM isn't being transparent, more they are being very slow at getting dealerships up to date.
I have been keeping my customers as up-to-date as possible with all the information I can on the delivery of their 2020 Corvettes. I had been using the GM chat and the info I've got from it, I feel it's trustworthy enough. I didn't want to be bothering Bill Spencer himself every day, asking for TPW updates. A couple weeks after I got a TPW for a customer, I was talking to him and he noted that he hasn't seen anything yet.
Edited to add:
It's not just Corvettes. This is more or less how it is with all of GM throughout Canada. When you're less than 10% of the size of the American market, you aren't exactly going to be a high priority. I can only imagine what it's like for GM overseas. At the end of the day, GM could completely abandon Canada and it would have minimal effect on their bottom-end.