Apple is set to launch OS X Mavericks in October, according to a recent story by AllThingsD.
October sounds like a likely timeframe at this point. It would be well after iOS 7, and probably soon after the iPad releases. The iPhone 5C and iPhone 5S will already have been on the market for a short period.
Here’s a portion of the report. It makes sense:
Though a firm Mavericks launch date couldn’t be learned, it’s possible that Apple may plan to ship the OS after it next reports earnings, something it did with both OS X Lion in 2011 and OS X Mountain Lion. Another possibility: Mavericks debuts alongside the new Mac Pro and iMacs and MacBook Pros based on Intel’s Haswell processors.