SG13 FGNGN is wrapping up, trying to fill in the details of architecture and requirements. It is probable that none of this has impact on the IETF. I will doublecheck, but since the last significant meeting is August 24th, followed by SG13 (which is much more likely to have impact), I will do so at those meetings.
http://www.iab.org/liaisons/ngn/2005-08-07.html