Along with the other devices getting the iOS5 update yesterday there is also an update to the Apple TV that adds some neat features. The update adds AirPlay Mirroring so you stream the output of your iPhone 4S or iPad2 to your TV, Photo Steam shows your recently taken pictures via iCloud and there are some 3rd party apps that seem very US centric.
To update your Apple TV go to Settings > General and click Update Software.
Details from Apple:
Apple TV Software Update 4.4 features
|Photo Stream||View photos recently taken on your iOS device and pushed to your Photo Stream in iCloud.|
|AirPlay Mirroring||Wirelessly stream what’s on your iPhone 4S or iPad 2 screen to your HDTV.|
|National Hockey League||Watch live games. View highlights, scores, and more.|
|Wall Street Journal||Watch up-to-date news, business commentary, and financial analysis from leading experts.|
|New Slideshow themes||Enjoy your photos on your HDTV with new slideshow themes: Photo Wall, Flip-up, Shifting Tiles.|
|Netflix||Added support for subtitles when available.|