July 13th may be the release date of one or both of Mac OS X Lion, new MacBook Airs, This maybe the reason why Apple Store employees will work overnight July 13th, This corresponds with the prediction of 9to5Mac which was Apple Will be releasing Mac OS X Lion on July 14th.
The new MacBook Airs could have faster storage, a Sandy Bridge CPU and Thunderbolts ports,Also there was some rumors about backlit Keyboards, 3Gs, A black version of the device.
Also there is Stories about Redesigning the White MacBooks, Mac Minis (everything that doesn’t currently have Thunderbolt).
Via | iclarified