An interview with IDW's Chris Ryall delves into the upcoming Infestation 2 comic series, and he talks a bit about the Transformers component... in that Hearts of Steel was meant to be the first of many "Evolutions" type stories that weren't part of the main storyline, but ended up being the only one produced. Now they have the opportunity to revisit that story, to hopefully appease the cult demand of more HoS story.