It was recently announced on both Skullgirls’ Facebook page and Twitter account, the 2D fighting game will be released on PC, August 22nd. It was also announced Steam pre-orders will begin August 1st.
— Skullgirls (@Skullgirls) July 12, 2013
February of this year, Skullgirls had a very successful Indiegogo campaign, that raised over $800,000 in just two weeks with the goal of adding a few new characters to the game. While it has not been released which characters the PC version will launch with, if you contributed to their campaign you can now occupy yourself with the beta.