The LEGO Group today has confirmed 2 things. There is a second exclusive set of BrickHeadz figures being offered at San Diego Comic Con this fall. The second pair are Supergirl and Martian Manhunter. This set is larger than the other by 90 pieces coming in at 234 pieces for the same $40 price. Once again, these will be offered to winners of a specific lottery style contest at Comic Con only.
The LEGO Group also confirmed that a small number of sets will be given away using a Twitter contest again.