Miscellaneous laptop discussions : Should I get a Macbook Pro or Keep My Macbook?

Should I get a Macbook Pro or Keep My Macbook?

I recently bought a Macbook this June. It has a Intel Core 2 Duo 2.16 Ghz and I upgraded to 2GB RAM and it has 120 GB of hard drive space.

Now I see the Macbook Pro and it looks really cool. Should I get it or wait till a time? When will the new Macbook Pro come out? Will the keyboard backlight disappear? If yes, is it replacable? Is it usable for 5 years (Yup, have to use it for 5 years before changing. Maybe even more.)

Thanks.
FV