Arrived today via Microsoft Connections. Here was the email:
We are delighted to announce the immediate availability of the SharePoint Capacity Planning Tool.
The SharePoint Capacity Planning Tool is a set of free models of Windows SharePoint Services 3.0 (WSS) and Microsoft Office SharePoint Server 2007 (MOSS) which allow you to explore the necessary infrastructure based on usage requirements. This tool uses the System Center Capacity Planner 2007 (SCCP) as an engine to provide for data collection, visualization, simulation and report writing. The tool can be used in pre-sales and feasibility study of a deployment project to give you a rough estimate of hardware requirements.
Please go to Microsoft Connect to obtain your copy and please tell us what you find so we can improve the relevance and acuracy of the tool.
You can find the Connect Program here: https://connect.microsoft.com/programdetails.aspx?ProgramDetailsID=1602