As a disclaimer - the old JSK I have was bought secondhand several years ago and is slightly faded. The old release is a warmer pink and has some damage around the armpits from the previous owner. I only wore it about 2-3 times myself. It has mostly been kept in my closet after I noticed it had a fading problem.
The old release is on left while the new release is on right! Photos have not been edited except for cropping.