We are working with the Google Wave team to get all EtherPad users a
chance to try out the Google Wave preview within the next couple of
weeks. We do realize (as does the Google Wave team) that Wave doesn't
yet have all the functionality you rely on, and isn't yet as mature as
EtherPad. We are confident that in the long term you will be really
happy with Google Wave, though. That's why we decided to join them!