Yes, AFAIK Larian are planning on giving backers their keys in time for release. Why wouldn't they? Of course something can always go wrong (some technical hitch), though I really wouldn't be keen to conclude that Larian have slighted you if something does. I can understand feeling disappointed, but I believe any anger would be unjustified unless it was the result of gross incompetence or malice. And really, how likely is that?