xml plans for postgres?

Recently Postgres has added a data type 'xml' which allows for
a well formed document to be inserted as a column in a Postgres database.
At the moment it doesnot have much utility, you can *almost* get the
same thing done with a text column.  It's obviously the first step.

Is there a document  that describes the direction Postgres
will take relative to xml technology?  XQuery, XUpdate and XSLT
are very different approaches that could compliment or severely disrupt
Postgres' evolution.

I personally am very excited about the potential but I'd like to get
the pulse of the community.

Thank you,

-g

-- 
Greg Fausak
greg@thursday.com