BeagleBoard changes log

Hi,

I would like to know if they are an available changes log for
Beagleboard. I would like to check if it is really interesting for me
to wait for a RevC board or if for me it is ok with a RevB. What are
main differences?

This information is found in the System Reference Manual. http://beagleboard.org/hardware/design

It is in the form of the schematic revsion tracking and changes and there is a section at the front portion of the SRM that describes the changes and delta from one revision to the next.

Gerald