[IronPython] Version issue in IronPython.codeplex.com

[Max Yaffe]

I'm trying to update my IronPython installation from the codeplex site.  
The web page text says: IronPython 2.6.1 for NET 4.0 msi  

But the downloaded file says IronPython.msi. The installation also says
IronPython 2.6.  So what is being installed?  2.6 or 2.6.1?

I do also have an installaller called: IronPython-2.6.1 RC1.msi   Should I
use this one instead?

Thanks,
Max