Just like the second iPhone HD prototype that leaked its way out of Apple's hands, it appears the next update to the MacBook has also strayed from the pack.  A Vietnamese blog out of Vietnam, Tinhte has in their possession what seems to be an unannounced update to the plastic MacBook, the only remaining model of the lonely MacBook title.  Being identified as MacBook7,1 (MacBook6,1 is the current model) the laptop sports a 2.4 GHz Core 2 Duo processor and Nvidia GeForce 320M graphics.  The last update to the MacBook line was last October, so perhaps we're not far from this thing hitting shelves.  In the market for the plastic MacBook?  If this video is any indication, I'd hold off for now.