What to make of it

I applied for a job a couple of days ago and today had an acknowledgement saying thanks for it, it has been well received and good luck with the interview. I am not sure if to feel that I've told good news, or if it was a mistake and the words should have been good luck with the application. Application in, and closing date not until Monday. I guess I will have wait and see, but it's a good job that I would love to do.