Between the upcoming media event on October 4 and recent downtime on MobileMe, it's looking likely that iCloud's public launch is coming soon. An email sent to an AppleInsider reader, reprinted below, adds yet more evidence for an imminent debut of iCloud.
Welcome to iCloud. The Apple ID for your iCloud account is [redacted] and it's what you'll use to get your iPhone, iPad, iPod touch, Mac, and PC set up. Just follow