Seibertron took some pictures of a wave 1 figure, which was used to create Slug's gallery over here, and compared it with a wave 2 packaged figure and it showed a very noticeable change in which the horns are now rounded with very soft looking edges.
Seibertron included the packaging code in the picture below, and the number is 40941. The wave 1 packaging carries the following number: 40551. I've included that image from my personal collection. Fortunately, the codes aren't exactly necessary as the different horn tips are easily seen through the packaging bubble.
Without further ado, the images:
Keep your optics tuned to Seibertron.com for the latest in news and updates, plus the best galleries around.