I am guessing that was needed when XRDS was a CD for a very long time and OpenID 2.0 needed to reference something stable. Either way, when XRDS Resolution 2.0 changed the schema from CD2 to CD3, they added <Type> at the XRD level but did not change the namespace.
EHL
> -----Original Message-----
> From: Scott Cantor [mailto:]
> Sent: Tuesday, December 22, 2009 7:22 PM
> To: Eran Hammer-Lahav; 'Will Norris'; 'XRI TC'
> Subject: RE: [xri] namespace URI versioning policy
>
> Eran Hammer-Lahav wrote on 2009-12-22:
> > That sounds highly unlikely.
>
> I thought so too, but the policy (which is strictly an XRI TC document, not an
> OASIS thing), does say CD counts, pretty clearly.
>
> Presumably the TC can vote to supersede its own policy. I guess the
> reasoning was to allow people to implement to CD "safely".
>
> -- Scott
>
