iTunes Connect, the portal iPhone, iPad, and Mac developers use to manage their apps on the App Store, will be shutting up shop for the holidays on December 21 and won't re-open until December 27. For developers, this means you'll be needing to submit any changes to apps or prices before or after those dates. For us regular, non-developer folk, that just means there'll be no new apps and no price changes until after December 27.
It is the holidays, after all, and Apple's team will be taking a well earned break. Here's the full details:
iTunes Connect will be temporarily unavailable from Saturday, December 21, to Friday, December 27, 2013.
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.
So, if you've got a roadmap that includes late December, better get sorted, then eat, drink and be merry. Everyone will be back on it from December 28.