I found a site with a countdown to the next Apple Keynote. http://wheniskeynote.com/ has a count down timer, an iCal import option, and possible upcoming announcements. The site also has links to engadget.com and arstechnica.com, which usually have live feeds and updates.
This is the latest invitation image, along with an update from Forbes regarding the possible news.
What is your favorite site for tracking Apple Keynotes?
Beyond the iPhone 5, what else do you think may come from this new announcement?