Apple has just released a free update for iBooks as a iOS 4.0 Tested universal update. iBooks 1.1.1 brings a number of fixes and improvements including multimedia enhancements such as the way in which you interact with audio and videos embedded in iBooks.
There have also been many overall performance enhancements made to the entire apps, and especially the PDF features. You can get the update and latest release of iBooks now from iTunes or the App Store.Let us know if you find any else or any bugs in this latest release. What other features are you waiting for Apple to implement in iBooks or the iPhone?