From Keith's blog :
As I noted in my previous post The Next Big Thing - The SharePoint Configuration Analyzer V.Next, we'll be combining the functionality of SPSiteManager with the SharePoint Configuration Analyzer, and incorporating SPUserUtil as well. In the mean time, we've found some immediate additions we need to make to SPSiteManager based on overwhelming customer requests and feature requests. Thus, I'm working on an update to SPSiteManager to include the following before moving forward. First I'll note what is complete, and then what is in progress to go into this version before I release it. This of course, is not an all encompassing feature request list :).