An Apple memo leaked on Twitter, revealing that the Cupertino-based company is setting Black Out Days between September 17 and November 4 due to the new product announcements in September. The memo said: Black Out Days means that advisors and leaders will be restricted from requesting days for time off. The company unquestionably is expecting a huge demand for the new devices, because the memo ends with the straightforward "absences are unacceptable". "In order to support our client during this very important time of year, we will be implementing Black Out Days in all AppleCare programs...
Source: http://www.gsmarena.com/apple_sets_black_out_dates_for_applecare_employees_between_sept_17_and_nov_4-news-25266.php