It is very disconcerting that there hasn't been any "straight talk" from a developer on here. From what I've seen, they are usually pretty good about that. I know they are busy finalizing everything, but one of those tasks is the assurance that the backers receive keys in a timely manner so that those with slower download speeds will still be able to pre-load just as the non-backer buyers are.
Something like "Hey guys, we know you are all anticipating the keys, but we ran into a tiny snag. It will be solved and you'll have your keys by very early Wednesday morning" or something similar. It would go a long way to relieve some of the tempers you read here.
The Policy of Silence is a very dated practice, especially in a crowd-funding world.