Visual Studio “Orcas” is Visual Studio 2007??

While installing the January 2007 CTP of Visual Studio Codename Orcas, the next installment in the Visual Studio suites, I noticed something peculiar in the setup window.

Is it really going to be called Visual Studio 2007? I do like the sound of it though. Unfortunately, installing this CTP on Windows Vista failed for me. I don't know why, but it continuously complains that a restart is needed before the setup continues. Uninstalling does not work either... to be continued..