Windows Release Preview is out!

Microsoft has just released the Release Preview versions of the Windows 8 Client and Windows Server 2012:
You can find more information here:
http://windows.microsoft.com/en-US/windows-8/release-preview
http://windows.microsoft.com/en-US/windows-8/iso
http://technet.microsoft.com/en-us/evalcenter/hh670538.aspx?wt.mc_id=TEC_108_1_3
http://blogs.msdn.com/b/b8/archive/2012/05/31/delivering-the-windows-8-release-preview.aspx

Where can I find the WHS/SBSe log files and what do they contain?

There is a great post on the Small Business Server blog which describes the different log files, where they can be found and what functionality is writing into them.

Also note that a tool exists, which is called Windows Server Solutions Log Collector Tool and which is an efficient/easy way to collect all of the logs.
It can be downloaded here.