The Tennessee Rules of Civil Procedure have been amended. The amendments are effective on July 1, 2007. See the amendments here.
The two most significant changes are to Rule 15 and Rule 56. Rule 15.01 has been amended to add the following language: "For amendments adding defendants pursuant to Tenn. Code Ann. §20-1-119, however, written consent of the adverse party or leave of court is not required."
Rule 56.04 has been amended to add the following language: "The trial court shall state the legal grounds upon which the court denies or grants the motion, which shall be included in the order reflecting the court’s ruling."