I mentioned in a previous post that the Civil Rules Commission has proposed several rules changes that, if adopted by the Tennessee Supreme Court and the Legislature, will become effective on July 1, 2006.
One proposal is a change to Rule 37 and provides that a party who without substantial justification fails to supplement or amend discovery responses pursuant to Rule 26.05 will not be able to use that evidence at trial. The proposed rule gives rise to the risk of imposition of other sanctions as well, including advising the jury of the failure to amend or supplement. Your can read the proposed rule here.