Well, well–turns out those pricing leaks from Amazon the other day were legitimate, and now Microsoft has stepped in to confirm what most of the tech-savvy world already knew. The company’s next-generation Zune, and arguably the iPod’s most serious competition to date, will begin to ship to US customers on September 15th, or just over a month from today.For those who can’t wait to get in on the action, a slew of retailers and e-tailers are offering consumers the ability to pre-order the device, which will be