Its Unknown.
Yes they will be making Xbox-720 in some time
Yes, But Microsoft are 80% likely to notice you have got a chipped xbox and will ban you from xbox live on that account and xbox resulting in getting a new (Unchipped) xbox and making a new profile on a different email address :(.
PS2 games are decreasing in new releases and the first that stopped being made were the games exclusive to the PS2. The same can be expected for the Xbox 360 when it is finally replaced. The new games made for multiple platforms will continue to be released for the longest time and games like Halo will be the first to switch to the new system and stop making a Xbox 360 version. It could even be expected that they would release the new system with some new game titles from former Xbox 360 exclusive game series that would only be available in versions for the new Platform.
no xbox sucks
Yes they will around 2013-2015. They want a good lifespan on the Slim Model.
That is a good question! I think they will stop making games for the xbox 360 and ps3 because of the ps4 and the xbox 720. They already stopped making games for ps2 and xbox. i have an xbox 360 so even i'm not sure weather to keep xbox or get xbox 720.
No, you can only use some games from regular xbox on the 360 but not vice versa. the whole point of making games for new systems is that you have to buy the new system to play it. it's a capitalist world.
Of course not, what would be the point of making the Xbox 360 then?
xbox e3
Yes, the Xbox games were discontinued almost as soon as the Xbox 360 came out.
a simple answer is no, only xbox and xbox 360 but in the future there may be a xbox480 or a new xbox, there are rumours that at the end of 2012 Microsoft will be releasing a new xbox console
If you have a Xbox live Gamer profile, you can just recover it on the new Xbox. If you are not online, you will need to buy a transfer cable.