They have enough funding through pre-orders to deliver... but so does/did Avalon and BFL and they have both lost all credibility to deliver anything including accurate updates.  Right now people are guardedly optimistic about KnC and some are extremely vocally optimistic (bitcoinarama).  

My advice would be to hold off on a KnC purchase until Nov. as they have announced that they will be lowering their pricing  ($7000 -> ~$5000?), and that point it will be clear if they have delivered or not.  It will probably be a mad scrum though when they announce the new pricing so if you want to jump in then, you will have to be quick.