One of the neat aspects of the Lync Server 2010 Resource is that it’s being published online, chapter by chapter as each chapter is finished. I suspect there will eventually be a physical book, in the meantime, Lync admins can get the deep technical and management info direct from the web.
Today, the latest chapter, Troubleshooting Lync, was released. To get this and the other released chapters, navigate to http://www.microsoft.com/downloads/en/details.aspx?FamilyID=8c64a1e1-f0b3-479c-a265-e480875c61d8&displaylang=en and download from there. You can download each of the 7 chapters published so one by one, or get a 12MB ZIP file with all the chapters.
If you are using Lync, or considering it, these downloads are mandatory reading.