The delays were to add more stuff, not to complete what they thought they could do if they were able to raise the initial amount on kickstarter. From an RPGCodex topic:
When it comes to time management, work for hire stuff is perfectly do-able. You get a budget, you calculate how much time that gives you, you make a design that fits that. You kind of need to know your limitations and not go apeshit with features and scope, kill your babies, and keep it realistic. When you're working on your own game, however, it's very, very hard to drop something or not do something, and once you see the potential, you just want to make sure it's the best game you can make. If you can proverbially buy time, you will, and it's only better for the game. The fact that we can postpone release, does not mean we suck, it indicates that we have the means to do it.
And officially it is 'spring', not summer. The German publisher said April 25th, but Larian had not announced a new date (and said they wouldn't until they were 100% sure of it).