Not sure if there's been any changes now, but I read a while ago that Irina plans to stay in competition till 2005, when the Worlds are in Russia. (Though if she does, that means she'd retire the year before the Olympics, which is a little strange).
Berezhnaya & Sikharulidze have officially retired from amateur competition now
S&Z said at 03 worlds that they are staying in AND working on the quad throw again.
AY had/is having surgery (sometime this month IIRC) so the jury is still out. Cambell's (early October) should tell the tale.
Conflicting reports from SH. She's doing school and some comps vs. she defering her school one year to compete vs. she's been taken off the roster for Cambell's (the next comp).