iBooks Change Hints at Fast OS X Mavericks Release Josh Smith09/05/2013 A small change in the listing for iBooks textbooks in iTunes points to a fast OS X Mavericks release that could come as an announcement at the September 10th iPhone event Apple scheduled for next week. Apple announced OS X Mavericks, also known as OS X 10.9, at WWDC 2013 in June with a Developer Preview following soon after alongside the iOS 7 beta.Advertisement While all signs point to a major focus on the iPhone 5S, iPhone 5C and iOS 7 at Tuesday’s event, Apple could use the time to announce the OS X Mavericks release date and price. If this is the case, it could also mean that the New MacBook Pro release date is weeks, not months away as speculation points to new MacBook Pro Retina and new MacBook Pro models in September or October, with timing based around the OS X Mavericks release timing. Read: 5 Reasons Buyers Need to Wait for the New MacBook Pro ReleaseAdvertisement Check out our OS X Mavericks price and release date predictions.Advertisement Macworld spotted a change in the iBooks language inside iTunes which points out Textbooks now work on any iOS device. The new message uses a less definitive iOS device name and mentions OS X 10.9 by name which leads us to believe the iPhone iBooks experience is getting an upgrade on September 10th and the OS X Mavericks release date can’t be too far behind. The image below compares wording. This small wording change hints the OS X Mavericks release is at hand. iBooks is a key upgrade for OS X Mavericks, as the app comes to Mac for the first time, completing the iBooks experience. Now, like the Kindle users can read on the iPhone, iPad and on their Mac. This is an important addition for textbooks which users will likely want to read on any device while in class or studying. Apple is currently on OS X Mavericks Developer Preview 7, which is the 7th OS X 10.9 beta seeded to developers since June. With this many iterations under way, Apple could be ready to deliver the OS X Mavericks Gold Master at Tuesday’s event and announce the official OS X Mavericks release date as well.Advertisement There was some speculation that since Apple is hosting the event at Cupertino, rather than at an outside venue where there is more seating and where the iPhone 5 launched, but it could also be Apple inviting us to the campus to see the army of new products Tim Cook promised earlier this year. If Apple uses the media event to announce the OS X Mavericks release, we could also see the new Mac Pro and new MacBook Pro models, but it is still not likely that we will see new iPads at the event.