We just talked about the features of Mango confirmed officially by Microsoft and we can already speak of other enhancements planned for Windows 7.5 Phone always thanks to podcast Windows Phone Dev Podcast. Ryan and Travis Lowdermilk revealed to have new screenshots Mango
relating to two features: SmartDJ and the ability to disable the camera sounds.
Regarding Smart DJ, owning a Zune Pass will be playing a mix of music from your Zune collection and the catalog when you are near a wireless network. If you do not possess a Zune Pass or not you are in wireless network area, the mix SmartDJ only includes songs from their collection. In short, I would say that this is a rival of iTunes Genius.
As for camera sounds, you can disable the shutter sound, to the delight of the spies: D wait for confirmation.