Buried in the SW install directory structure is a file called quick_reference.pdf. It is a four page cheat sheet on many of the SW icons, quite a few of which are new to 2008. There are also some changes to commonly used keyboard shortcuts. It is under the lang\english branch (or whatever language you intalled under). TOP
I have found that a quick way to compare to the previous version of SW is to open that doc from say 2007 & 2008 and just run down both at the same time. It's a quick update on new stuff. WT