Predictions:
-Durango will come with a universal remote.
-Durango will have some of the Kinect 2.0 "guts" built into it (mainly audio), but Kinect 2.0 will be released about 12-18 months after launch. They will announce it's coming, but as a separate add-on. $100 to $150.
-The HDMI in will pass through cable/dvr/sat. The universal remote will control the channels and if you have a DVR, that will still function as a DVR. "TV" will be one of the main tiles in the new interface.
-1 to 3 gigs of RAM will be used for OS purposes depending on the state of the device. In standby mode, which the unit can be set to do at all times, it will be about 1 gig and extremely low power usage. Durango will display an interactive "frame" around what's showing on the TV through the HDMI in pass through. This frame will show facebook alerts, email alerts, twitter updates, xbox live requests, and any other relevant updates that you configure (like podcasts, youtube, etc.). You can also browse the web from here and related links may pop-up depending on your settings and what you're watching. Durango will know what you're watching by using software algorithms that sense the logo on the channel's corner (almost all channel's have it now). Plus in the initial set-up, Durango will ask your zip code and provider info so it can synch better. As for DVR functionality, I think it will offer that as well by coming with a small bluetooth IR transmitter that you place in front of your dvr/cable box so Durango can control it. This will be the closest thing to merging the living room with the PC yet. Just like the PS3 was seen by many as the "bluray player that also plays games" Durango will be seen as the "Facebook box in the living room that also plays games"
-Smartglass functionality will probably include watching recorded TV, live tv, or having interactive stuff on the smartglass while you watch the show or event. Similar concept for games. Since everyone seems to have at least a smart phone or a tablet in the house, Smartglass will be nearly universally usable. Smartglass/Durango will be Microsoft's trojan horse to get nearly all your contact accessible and "served" by Durango to practically any device whether you're home or on the road. Even downloadable games can be served by Durango to devices. Think about all of the implications...
-Durango will be priced at $399 and $499 (bigger drive). It will be 10-25% weaker than the PS4 due to these sacrifices and "direction".
-I think PS4/Durango will be pretty neck and neck worldwide in sales and WiiU coming in closely in 3rd. It will be the closest 3-way race ever with each system offering something different/unique. Durango will be #1 in North America, though.