This summary is not the rule. The rule text controls.
Here's a plain English summary of this rule:
These rules start working 90 days after the Tennessee General Assembly and Governor approve them. Once that waiting period ends, the rules apply to any new criminal case that gets started.
The rules also apply to cases that are already in progress when the 90 days end, but only when it makes sense to use them. Courts will look at each ongoing case and decide if it's fair and workable to switch over to the new rules, rather than forcing every single pending case to follow them no matter what.
In short, this rule is about timing. It gives everyone (courts, lawyers, and the people involved in cases) a 90 day heads up before the new rules kick in, and it explains how those rules fit into cases that are already underway.
