On Tuesday what curious activity was going on at Apple stores that is leading some to predict a major new product launch this week?

Answer: The windows at Apple stores around the country are being blacked out. According to BGR.com, "Apple may be planning something big for its 10th retail anniversary this Thursday the 19th. ... There’s an overnight shift planned for around 10-15 individuals at each Apple Store to work from late Saturday all the way through mid-Sunday... [and] Apple employees will be putting up black curtains at all stores so that people walking outside cannot see inside."