The Midrash Project of the Shechter Institute of Jewish Studies just added a synopsis of Midrash Qohelet Rabbah. The synopsis was put together by Shaul Barukhi under the guidance of Marc Hirshman and Reuven Kiperwasser, both of whom authored dissertations on Qohelet Rabbah (and in Kiperwasser’s case, also Qohelet Zuta). Hirshman is now at work on an edition of chapters 1-6.
…and Kiperwasser on chapters 7-12.