Big news is breaking over at Mashable. On September 30th, Google will start sending out about 100,000 invites for the next version of Google Wave. (Right now, only a select number of people, mostly developers, have their hands on it.) You can sign up to be part of their next wave of testing subjects, here.
What is Google Wave? A real-time communication platform that combines aspects of email, instant messaging, wikis, web chat, social networking, and project management. You can bring a group of friends or business partners together to discuss how your day has been or share files.