It would be good if the system allowed updates to allow for better realism, etc in later titles.
But from what I've seen, getting that card has no impact on games at the moment what so ever to using software to implement physics.
Maybe in later titles where graphics get more and more advanced, a card like this will be needed, but its not a neccessity at the moment.
Considering also that the physics system used within the card is probably not as advanced as the Half Life 2's Havok system, and you have a problem.
That is why I hope they can offer updates.