Rumours are flying around the web that Apple is set to launch mountain Lion July 25.

9to5Mac is reporting that they've heard from multiple sources that Apple will be holding an overnight July 24. This could indicate they are setting up for the launch of Mountain Lion.

"We’ve heard a few whispers (3 and counting) that Apple Stores both in the United States and overseas have planned overnights for Tuesday, July 24th. With OS X Mountain Lion launching “in July”, according to Apple, we believe that it is sensible to speculate that this overnight may point to a public launch the following day."