It was confirmed yesterday that the Killgrace series will be expanding to platforms other than Amazon. Today the first two books, Singular and In Depression were reformatted for epub, assigned ISBNs, and added to OmniLit.
Over the next few days, more of the ebooks will be added. The full set will soon will be available through Kobo and other distribution channels in epub.
It is also possible, from what I have heard, that the range may be coming to print this summer.