01) the xbox one (or xbone as people are starting to call it) is about the size of 4 wii u's so similar to a phat 360
02) always online is not required although some games can require it and as time goes on with more processing shifted to the cloud it will become a defacto requirement.
03) it will need to connect to the internet at least once every 24 hours for "offline use" to validate content
04) it must connect to the internet to install a game as a single use code is required
05) kinect is required to be connected for the device to function
06) kinect is never "off" it is always listening (and watching?), ms claims its priority is privacy, governments may not agree.
07) once a disc is installed it acts a digital download, can be used on other accounts on the same system or on your account on another system where you can install the data from the disc rather than download it, outside of those exceptions you will be required to pay an activation fee possibly equal to the full retail price.
08) you can trade, lend and sell your retail games used but the receiver will be required to pay the full retail cost to ms to activate it.
09) xbox one uses kinect to identify you and sign in so you cant leave your account to be used on another system without being present, you cant use a photo to sign in as kinect can sense bloodflow in your face to measure heartrate.
10) kinect can sense multiple viewers to allow "premium charging" for certain content
11) kinect will identify your childrens account and block their use of age inappropriate content if correctly set up.
12) all content can be region locked to prevent out of region play / use
13) the xbox tv service (and many of the apps) will only work in the usa but will expand to other regions in time.
14) to use the tv pass-through an additional adapter can be purchased, some tv providers will also require an additional subscription on top of your regular cable, internet and xbox live gold subs.
15) live gold subs will work across both 360 and xbox one although family membership is unavailable once current memberships expire, all gamerscore and achievements carry over although a new dynamic achievements system is in force on xbox one
16) there is absolutely no backwards compatibility on xbox one and no intent to provide any however you may be allowed to rebuy previous gens games digitally at some later point.
17) the xbox one contains a fully licensed blu-ray drive capable of playing bluray movies (including 3d on a suitable screen) and storing upto 50gb of game data.
18) installation is mandatory, the xbox one cannot play games off blu ray discs, online is required for installation.
19) the internal hdd is 500gb and is not user serviceable, its locked to the system and can only be exchanged by microsoft service and is not upgradeable, primary usage is to store system settings, patches, brag clips and downloaded content, an external hdd can be added (like on wii u) using one of the usb 3 ports on the side of of the system, at present its unclear if you can use any drive or a custom ms drive, most games will be installed to this extenal drive once the internal gets close to being filled (the internal drive can hold a minimum of 9 games when fresh)
20) the xbox one is not designed to be stood vertically
21) the power brick is internal, power usage should average below the power usage of the current 360 as parts switch to low power mode when not being used although in standby the usage is slightly higher to keep kinect powered up.
22) the kinect can transmit ir codes to activate you tv and change to its own input when you say "xbox on" to turn it on
23) smartglass is more heavily integrated into xbox one so you may need to add the cost of a suitable tablet to fully utilize the system.
24) in the uk the expected price is £399.99 with the launch on 30th november, retail prices for games will be £49.99
25) xbox one retail discs ship in green g2 sized blu-ray disc cases not g1 dvd sized with the xbox one branding across the top, "better with kinect" is dropped as its now a standard part of the equipment, no details if any kinect only games exist or will get purple cases.
26) the claps and cheers at the xbox reveal event were not from the assembled journalists but ms employees at the back of the venue.
27) the zebra striped console and controllers previously rumoured have now been outed in published photos.
28) currently there are no plans to increase (or decrease) xbox live gold subscriptions other than the cancellation of the family pack which will still be required for online play as well as allowing access to other services which may or may not require an additional fee (like netflix etc), there is no word on whether the bbc iplayer will be available on the system as ms are not able to charge any fees to access that service.
29) microsoft plan on using e3 as the platform to display xbox one games including at least 15 planned exclusive titles available in the first 12 months either as live arcade titles or as retail boxes.
30) the new microsoft store will drop arcade and indie sections combining them all together in a "games" section.
31) the xbox home screen can be partially customized.
32) the joypad triggers have seperate rumble fetures that will allow them to be programmed to give feedback depending on the game you are playing (like engine rumble or a gun recoil).