Missed target dates are a disappointment, but we live in the real world and things happen. For those that throw hissy fits because of it are just childish and haven't lived through enough experiences. That may sound harsh, but its the truth. I've been a video gamer since I was 4 yrs old. When I was in my teens and I started to pay attention to game release dates and such, I was often disappointed with delays. Its nice to have an approximation of something, maybe even a window of expectancy, but to want to pinpoint anything in life to a very specific day/hour/minute/etc you set yourself up to be disappointed. This is especially true for college, jobs, relationships, etc. I want to graduate high school, then go to college, then graduate college in 4yrs, then find a job out of college, then find the perfect person, get married, then after 2 yrs have a boy, then a girl, then retire, then die. Sounds boring when you list it from start to finish. Its the journey thats the most exciting and the best teacher.
If you give a window of say 2 weeks or a month of when to expect the first shipment of knives to go out, that's great, and make a statment to go with that announcement that not all orders may not be filled by the first shipment.