NECA has officially revealed their variant figure for Series 2. It is an Iron Maiden Regenerator, as viewed through the thermal scope. It is extremely limited much like the Bloody Chainsaw Ganado variant of Series 1. It is inserted in only 1 out of 5 packs so its best to go to your local store and try and grab this before they are gone and being sold on ebay for 100$. The even more rare convention exclusive Leon figure in his RPD uniform was given away for the first fan who could find the figure, which is also reveled on NECA's site.
More information can be seen at the NECA Website.