Yes, you are in the right place.
The plugin has now been completely re-written using a different method to observe when an item is added to a users cart. The result is a much more versatile plugin. Whereas before it would only appear once per page load, it now appears every time an item is added to a users cart. In addition, the old version was limited to one add to cart button per page whereas the new one will work for every add to cart button on the page which is useful if you use product blocks.