Logos 4 is here. I posted about it earlier this morning. But if you quickly go and get it, remember that since it is a whole new program, rewritten from the ground up, it is really Logos 4 1.0. Being a 1.0 (essentially) it actually has a few missing features compared to the previous version 3. One of those is my favorite, the diagramming too.
Other are missing too. You can find out what here: http://www.logos.com/4/missingfeatures
