Apple is not going to leave their Apple Store behind while hosting the World Wide Developer Conference to launch Mac OS X Lion, iOS 5 and iCloud. 9to5mac source got hint that Apple’s retail stores across the world are receiving boxes by Apple labeled “ATTN: Visual Merchandising”, these boxes come up with special instructions which prevent staff to open these boxes before Monday, June 6.

So what you think?  What they have in these boxes? New window displays for iCloud, Mac OS X Lion, iOS 5?

… None of the above?