I am sure that with such a large number of pre-pubs gathering interest, there are some excellent ones that have been overlooked, but which some of you are ardently wishing would make it through into development.
This is a thread so we can advertise those pre-pubs and perhaps finds some gems.
The first one I would like to bring to everyone's attention is Patrologia Cursus Completus, Series Graeca, Part 1 (vols. 1-18) ... http://www.logos.com/product/4346/patrologia-cursus-completus-series-graeca-part-1. This is the Early Church Fathers in Greek. Not only is it good to be able to study these writers in the original languages, but the search capabilities of Logos will give us ways of checking how Greek words were used in the developing Christian church, sometimes helping to throw light on the meaning of the New Testament.
Another one I'd like to bring to people's attention is the library of religious and theological journal paper abstracts, http://www.logos.com/product/8652/religious-and-theological-abstracts. A lot can be gained from a well written abstract even without the paper to look up, and if one seems to be particularly relevant, it will tell you want you need to find at your local theological library (or to get through an interlibrary loan). This is an incredibly cheap price for a power resource.
What pre-pubs gathering interest are you really excited about, and would like to advertise to the rest of us?