Everything went very well at the children's hospital. The day went smoothly (though very long) and our son was his normal angelic self, which frankly was pleasantly surprising with all the new things he encountered that day. We figured he would be crabby at some point, but really that wasn't the case.
The diagnosis from the hospital is indeed autism. This is not a surprise, though it certainly makes us sad. Our plans for today and the next few months certainly are no different as a result of this diagnosis. However our vision for the future is now a big question mark. I guess it will just force us to live in the moment and not worry as much about the future. Living in the present isn't my strong point, but Wife and I can hold each other up throughout this process.
The nice thing we kept hearing is that we're doing the right thing for him now, so we just need to continue onward. We were relieved that we never heard anything like, "You're going to need to change the way you do 'X' with him." On the contrary, they were quite complimentary. This was good to hear since both Wife and I are the types to blame ourselves for these sorts of things.
The preschool he's in now will do its own evaluation by the end of this month. We suspect a similar diagnosis, but it will be interesting to see how it all pans out. The school has been fantastic with our son, so we suspect they'll be part of our team that helps him learn.
So, onward and forward. Son is a great kid, and with any child it's the parents' job to stick by him and help him grow and develop in whatever manner that may be. Wife and I are relieved to have a diagnosis and to no longer be in the dark as to what's going on with him.