Document/window sharing in next iChat?

ThinkSecret.com is spreading the roumor that Apple might introduce a new iChat version with sharing. It is the #1 request I have for iChat: it would allow possible to give remote presentations. Yes, there are other applications that had this feature for years (like NetMeeting), but iChat was the only application that actually worked for video conferencing. This might have changed with vSkype – but I need a Mac solution for this.