Not officially.
While Microsoft did announce a product of that name, it's currently in the testing stages, and is due at some point between Jan. 2011 and Dec. 2012. The exact date has yet to be announced.
the XBox 720 doesn't exist yet. It might never exist
No, the Xbox 720 does not exist. There is no word as to whether or not Microsoft is developing one or not though.
Yes it does exist but it wont hit the stores in 2012 - 2014.
There is no Xbox 720 available?
I don't think you can use the Microsoft points on the Xbox 720. I don't think there is an Xbox 720.
The xbox 720 cost 40,000 dollars
Unknown. At this moment in time, the "Xbox 720" doesn't even officially exist outside of rumors- wait until an official announcement about the console from Microsoft before looking for more details.
When was the word Xbox 720 first search in a search engine and in which state
The Xbox 720 is shaped like a sphere.
The PS4 because there is no xbox 720
Xbox 720 Specifications and Features Leaked What are they?
The PS4 because there is no xbox 720