As OANST suggested, some of the projects may be porting existing games- this would make sense (after all, I cannot imagine that JAW would be creating lots of games at once).
If this is the case, going by how a PS3 release has not been hinted so far, it is possible that this particular project may be porting the originals (AO and AE) to Live Arcade- hence the absence of PSN, since they are already there. Just a thought