iTunes Connect will be unavailable for “up to eight hours,” next week.
The mailshot sent out to registered developers on Thursday, read as follows:
On April 22, beginning at 7:00 a.m. (PDT), iTunes Connect and related content delivery services will be unavailable for up to eight hours. The following services will be affected:
App build upload in Xcode
Application Loader and altool
iTunes Connect Mobile
During this maintenance window the company notes that users will “not be able to submit new content” or “make changes to existing content.”
Apple is therefore providing advanced warning to those who may need to process changes, to make sure that they have completed any critical deliveries – before this date.