Here it is, the final (is it every final) Xen Summit Boston Agenda along with a separate document containing the topic abstracts.
xensummit_agenda.pdf
xensummit_presentationtopics.pdf
Extended abstracts on topics being presented at http://wiki.xensource.com/xenwiki/Open_Topics_For_Discussion.
A big thanks for the incredible efforts of the Xen Summit Program Committee in putting together this exciting event. Looking forward to meeting everyone in a few weeks in Boston.