These rules take effect ninety (90) days subsequent to their approval by the General Assembly and the Governor. They govern all criminal proceedings thereafter commenced, and so far as just and practicable, all proceedings then pending.
Tenn. R. Crim. P. 59
Advisory Commission Comment.
On April 14, 1978, the Governor approved the joint resolution adopting these rules. They therefore became effective on July 13, 1978.