0.5% fits very well with a scenario in which effective treatment for victims becomes widely available in October rather than next January.
12 dead from the DP. 1 on board, 1 evacuated to the US, 1 evacuated to Canada.
And somewhere they found another 5 cases for a total of 712.
597 recovered, leaving 103 cases unresolved.
The DCR for the DP is 1.7%, the current CFR is 2%. The final CFR will be somewhere in between those numbers, I expect, but if all 103 were to die it would be way higher (16%), and if none of the 13 die it drops to 1.7%. That 1.7% is, mathematically, as low as it can get given the reported numbers.