ReadWriteWeb

Later this month, iPhone and iPod application developers can expect to see sales drastically increase by as much as 300 or 400 percent over the course of a couple days.

They'll also be unable to change their applications, change marketing materials or download sales reports during much of this time. iTunes Connect, the interface that allows developers to manage all their applications in the App Store, will be unavailable from December 23 - December 28, 2009.