Apple recently sent out emails to developers, reminding them that the iTunes Connect developer portal will be shutdown for the holidays from December 21 through December 27. According to the email, developers won’t be able to submit apps or in-app purchases, update Newsstand feeds or change app pricing between the quoted dates. Apple traditionally holds the downtime near the end of the year for those of you who did not know about it.

The email mentions the following:

During that time, iTunes Connect will not be accessible and you will not be able to submit any apps or In-App Purchases. Processing of any Newsstand Atom feeds will be delayed until after December 27. Sales and Trends reports via the Autoingestion tool will be available but may also be delayed.

Also, you should not schedule any pricing changes or apps to go live between those dates. Pricing changes scheduled to take effect in that date range will cause the app to become unavailable for purchase until after December 27. Similarly, apps scheduled to go live during that range will not be released until after December 27.

If you have any additional questions, use the Contact Us module on iTunes Connect.
Apple’s iTunes Connect is a tool that is used by developers to manage apps sold through the App Store including updates, pricing and descriptions. Last year, iTunes Connect was scheduled to close from December 21 to December 28, which is roughly the same time period this year.

Source: Apple via iMore