SlashGear is at Google I/O 2010 this week, and the search company has started the event by throwing open the doors to Google Wave. Previously in an invite-only beta, Google Wave is now open to anybody who wants to sign up; meanwhile there's also integration of Wave with enterprise Google Apps accounts.
Video demo after the cut
Google has also announced that they'll be opening up more access to the Wave source code, so developers will be able to integrate the discussion service with their own projects and tailor it to suit.
Since Wave first launched, Google has added in email notifications of conversation updates, made it easier to track unread messages and remove accidentally added participants, and introduced an extensions gallery. You can sign up here.