It takes effect 6/26 for all rollovers going forward, not for a season that had already started, even if the only thing that had started was recruiting.
And, jsajsa...false. he said just the opposite, well sort of the opposite:
Each player will be evaluated by a position-specific formula that weights each rating relative to how important it is for that position. Then the player being redshirted will be ranked within the entire team roster, and his response will factor in that placement. Depth chart is not used for this, just listed position.