Yes, it's a new rule, but the wording of said rule does not consider the possibility of suspension for violation. The penalty for violating the slide rule is 2 outs. Unless they plan on changing the rule, suspending Bautista for that slide (no matter his post game comments) doesn't make sense. Even if they did change the rule, it would be an ex post facto change, which would be difficult to punish Bautista for.