Bipolar deployment?

Found out today that he is no longer coming home when he expected it to be. It has been pushed to December now. I knew it was too good to be true! Makes me sad inside but I should have known better. I should just expect January and that's it nothing earlier. But he made it seem like he would be home sooner and we planned a vacation together. I'm just a little bummed to hear this. Deployments are rough no doubt about it. It's full of ups and downs. The emotions are going a little crazy today.