The Open Library of the Humantities (OLH) has just launched this week after two years of planning and preparation!The platform starts with seven journals, supported by 99 institutions (at a cost of $6 per institution per open-access article.)
OLH is similar in many ways to the PLoS model in that OLH functions as a multidisciplinary journal itself, but also consists of seven discipline specific journals. Articles are released on a weekly rolling cycle, which means there is always new content being released.
Read the full launch announcement here: https://about.openlibhums.org/2015/09/28/olh-launches/
Here is the list of journals currently being produced: https://www.openlibhums.org/site/journals/