For those who are eagerly waiting for a Google wave invite you can hold your horses till Australia wakes up.
A Google Wave developer tweeted this about 3 hours ago.
Since the Wave team, who will be supporting the platform is in Sydney you have to wait till they can wake up.
Right now the time in Sydney is 3:15AM so you can safely assume to start getting Google Wave invites by around 7PM EDT or 4PM PDT on September 30th.
Sorry to be the deliverer of a bad news :-). Keep your fingers crossed will you. Thanks Karthik.