I would say overall it's a good sign--they're not going to waste their time calling unless they were serious about him.
The only thing--DH interviewed 6 different times with 10 different people at a company. After the final interview, they called his references. In the meantime, he got another job offer. He called the first company to follow up and see where they were at in the process and to say he got another job offer. He never heard back from them either way-- that he did not get the job--not even a form letter.