* Microsoft (MSFT) did a big unveiling for Windows 8. The operating system update features a radically different, streamlined user interface heavily influenced by the company’s tile-based Windows Phone 7 operating system and optimized performance. (CNNMoney)

* Facebook made its Friends Lists feature smarter with new features like Smart Lists, which automatically creates and updates lists based on common profile information. (Facebook)

* Why Facebook’s music service, reportedly set to launch on September 22, will transform the social network from a communications platform to a content site. (The Telegraph)

* RBC Capital’s Mike Abramsky raised his fourth quarter iPhone (and iPad) estimates based off the results of a survey showing “unprecedented” demand for the iPhone 5. (Fortune)

* Twitter revealed during TechCrunch Disrupt that the social network is driving 100 million clicks a day to web sites. Meanwhile, the embeddable Tweet button is being used by over 3 million web sites. (TechCrunch)

* Social music-sharing service Turntable.fm announced a $7 million round of funding led by Union Square Ventures as well as an iPhone app. (GigaOm)

Don’t miss the latest tech news. Sign up now to get Today in Tech emailed to you each and every morning.