New sequel for a sequel?

Apparently, the movie Terminator Salvation was set up to be the first film of the new Terminator trilogy. The upcoming Terminator 5 will be the sequel to Terminator Salvation. The audience will see alot of time traveling in this new movie and maybe some cameo roles by the stars of Terminator 2: Judgement Day. This film is set to be released sometime in 2011.