If you are a Visual Source Safe or other equivalent product user, looking for an integrated source control, work item and build automation environment, then make your way to Brian's blog post http://blogs.msdn.com/bharry/archive/2009/10/01/tfs-2010-for-sourcesafe-users.aspx.
It is not often that I disagree with Brian either, but today is one of those days … sorry Brian! In his blog post Brian states "... what it lacks from Standard TFS is Sharepoint and Reporting capabilities ...". I believe the word "lacks" is not appropriate, because this is exactly what makes this edition so exciting and powerful.
Get your hands on TFS|VSTS 2010 BETA-2 when it ships and give it a try. Load it on your laptop, load it at home … see it fit into environments from small (you) to enormous (enterprise).