good sum up from a GAFer (BlazingDarkness):
My understanding of the devices;
XBOX360 Mini device
- No disc drive, so it's essentially useless as a standalone XBOX for gaming, but good for TV functionality alone
- Requires an internet connection to function
- Access to the XBL marketplace and whatnot (so it can play downloadable titles)
- Will share some features of the Durango TV (IPTV) functionality (to combat Apple TV)
- Required to play 360 games, when connected with the Durango, can NOT play 360 discs when not connected
Durango
- The new 'new' XBOX
- Plays Durango games etc, uses Kinect functionality
- Will not play 360 games, you must hook up the Mini device once you insert a 360 disk to play (you put the 360 disc in the Durango disc tray, but it runs only when connected with the Mini)
- Requires an internet connection for TV functionality
- Plays used games
- Plays offline games
