The formal launch has just taken place at the European Congress of Mathematicians in Krakow of the Forum of Mathematics, which to a first approximation is a new open-access electronic journal. However, the singular “journal” is misleading, because in some ways it is more like a whole set of journals. But there will be considerable interdependence between the elements of the set, so “journals” is misleading too. We need an intermediate number between singular and plural. Also, although the journal(s) is/are primarily electronic, there will be a print-on-demand option if anyone wants it.
See on gowers.wordpress.com