When we RTM we will have two versions – a retail version and a trial version. The retail version will install on top of Visual Studio 2005 Professional, a Team Edition version, or VSTS. The trial version will only install on top of VSTS or VSTS Trial.
Up through CTP4 we provided our retail version. For CTP5 we are looking at providing our trial version. The reasoning is that we are nearing feature complete. If we do that, then you would need to have VSTS or VSTS Trial installed. If you don’t have VSTS you can download the VSTS Trial from http://www.microsoft.com/downloads/details.aspx?FamilyId=5677DDC4-5035-401F-95C3-CC6F46F6D8F7&displaylang=en.
You can install VSTS Trial on a machine that has an existing VS 2005 installation. When the VSTS Trial license expires, to enable your previously installed VS 2005 installation, you will need to uninstall the VSTS Trial version.
Let me know what you think about this.