I want to buy a psp but i'm worried that a new version might come out already. Should I buy now or wait?

I heard many rumors about a new handheld model and successor of the psp. Is it true? I really want to know because i don't want to waste my savings in a console that is about to be replaced in a year or less.
Update: I heard many rumors about a new handheld model and successor of the psp. Are the rumors about a psp2 or psp lite true? I really want to know because i don't want to waste my savings in a console that is about to be replaced in a year or less.
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