From the preview:
This August fans everywhere will be celebrating 10 years of Marvel HeroClix with (the aptly named) Marvel HeroClix: 10th Anniversary set. Marvel HeroClix: 10th Anniversary is a standalone set of 24 ALL-NEW, unique sculpts and dial designs for 12 fan-favorite Marvel Comics’ characters. Each character has early- and modern versions that are connected via a special Battlefield Promotion game mechanic. This special Battlefield Promotion ability allows the early appearance version of the character to transform into its more modern era counterpart.
We continue our series of previews for the Marvel HeroClix: 10th Anniversary set as we visit Spider-Man’s most fearsome arch nemesis: the Green Goblin!