My roommate and I played Shogun's Demo. It was every kind of awesome, except extremely limited because of its being a demo. And by limited, I mean LIMITED. You can fight prescripted tutorial battles and one historical battle only. Otherwise, we are both convinced that Shogun 2 is the best Total War game to date, potentially among the best strategy games upon further testing: they seem to have more or less included all the functions we've both been hoping for in a Total War game at the SAME EXACT TIME (effective cavalry charges being one of them).
As of 3/14/10, TSL is restored. The Sith Lords Restored Content Modification by Stoney and Zbyl has been finished and can be downloaded here