[ame=http://vimeo.com/16744288]Couch Surfer Pro for ATV 2G on Vimeo[/ame]
FireCore - the makers of the aTV Flash package for the original Apple TV - say they're a week or two away from a beta version for the Apple TV 2G. Called aTV Flash (black), the package will allow browsing and last.fm streaming, as well as access to media on Network-Attached Storage (NAS) drives. You can order the aTV Flash now, and get a free upgrade to the (black) version when it's available.
The original aTV Flash is a mod to the "silver" Apple TV that allowed for web and non-iTues content to be played on the device. The updated (black) version will be a wireless install to a jailbroken second-generation Apple TV. Once installed, a "Maintenance" item will be added to the Apple TV menu system which will allow content and - most importantly - other apps to be streamed to the unit.
The Installer is said to be almost complete, at 95% according to the FireCode guys. Last.fm is at 85% and the "Couch Surfer" browser is further behind at 65%, with basic functionality already working but more support for web plugins needed. Support for video codecs and NAS streaming is still a work in progress at 15%, and will not make it into the beta. FireCore says they're working with "outside developers" to help them along.
The beta may be available as early as next week, so if you have a "black" Apple TV, it's not too early to get signed up and possibly preorder a copy. The availability of a common way of streaming apps to the Apple TV will really jumpstart development of jailbroken apps for the device.