Apple has held its traditional music-based fall event today, which some interesting new software announced.

From next week, iPhone and iPod touch users will be able to download iOS 4.1, the update to Apple's mobile operating system. This clears up bugs and introduces the Game Center, which will bring together gaming in a new way on iOS devices. Incredibly, the 3D Unreal Engine was shown running some fantastic 3D games, better than anything seen so far on a mobile phone. In November, iPad owners will finally be able to enjoy the goodness that iPhone users have been enjoying with the release of iOS 4.2. That means multitasking arrives, alongside a host of other interesting developments. Steve Jobs highlighted wireless printing, and the new AirPlay music streaming abilities for the tablet device. With iTunes 10, there’s a new logo (recognizing the death of CDs), and the library view has been reorganized a little, making better use of space. The biggest development is Ping. It’s a social network all about music, within iTunes that will allow sharing of music, concerts and artist news. Calling Ping a musical mix of Facebook and Twitter,  Steve Jobs sensibly didn’t mention Last.fm! We’ll give you the lowdown on the iOS 4 updates as soon as we get our hands on them, and see whether iTunes 10 lives up to expectations too.