With the holidays rapidly approaching, I wanted to confirm that the Windows Phone Store will be open for business during the holiday timeframe. Since the launch of Windows Phone 8 in late October, we are experiencing a sustained 40% increase in Windows Phone app submissions. To meet this increase in app submission volume and maintain our certification processing turnaround times for developers, we will have our full staff on-hand throughout the holiday period.Microsoft To Keep Developer App Certification Open Throughout Holiday Period [blogs.windows.com]