If you go to the new iTunes site, you will find a new release date of "November". Apple said this iTunes would come in October. Many people blame the recent firing of Scott Forstall, Senior Vice President of iOS Software. Many people (including me) are calling it a very bad mistake for Apple. You just don't fire someone from Stanford. Apple Spokesman Tom Neumayr had a say in this.
"The new iTunes is taking longer than expected and we wanted to take a little extra time to get it right. We look forward to releasing this new version of iTunes with its dramatically simpler and cleaner interface, and seamless integration with iCloud before the end of November."
- Apple Spokesman Tom Neumayr
To learn more about the new iTunes, go to http://www.apple.com/itunes/new-itunes/.