The new "Xbox Experience" Fall Dashboard has been leaked on the web and I had a chance to crack at it.

Update9:
It has finally been done but NOTE, only modded systems at this point are able to do the install. The process is quite easy if you cannot figure it out but will not be released at this time. A fellow member here by the name of xg4m3r has discovered a path for modded consoles to install the update as you can see in the video below. Like I said in update 8 we are still working on this process to see if we can manage anything on retail consoles. We are not releasing anything at this time but more news is to come soon. Enjoy for tonight because tomorrow should be a whole other day! See you soon!
NOTE: Your Xbox 360 NEEDS to have the Infectus 2 Chip in the system for this work. Not just a modded FW hack the chip is required also. Sorry for the confusion!

via xbox-scene