Mingle- ThoughtWorks hotness?

Wow, the high priced consultants @ ThoughtWorks have broken into commercial product development. This is going to be interesting.

Mingle is apparently an agile project management tool. We've looked at VersionOne and Rally in that space (not to mention Team Foundation Server), but we're actually using Trac, which is hard to beat for the svn integration and price. I wonder how how much this pup is going to cost?