This is a big couple of days for Apple ; as if the company's blockbuster earnings at the beginning of the week wasn't big enough news on its own.

Friday will bring the official release of the company's highly anticipated, and delayed operating system "Leopard." With the company selling better than 2 million Macs last quarter, there's no question that a new OS could juice sales even more. That's what new operating systems have done for the company in the past--think back to the importance of Tiger--and the Street fully expects Leopard to be a catalyst as well.