In January of 2015 I happened upon the info about a Neo Pocket Color Slim which was released in Japan right after the release of the original Pocket.
When I saw the Yellow Crystal, just had to have it. And I am so glad I purchased this awesome redesign.
The slimness of the new design may not seem that much on the outward appearance, but in your hands it makes all the difference in the world. The original feels so chunky afterward.