"Tomorrow is just another day. That you'll never forget." This two statements are greeting you when you visit Apple.com right now. Apple has an exciting announcement from iTunes for tomorrow 10am EST.
The things that come to mind are iTunes streaming and iTunes in the cloud. Looks like Apple is ready to flip the switch in their massive new data center to offer new massive cloud based iTunes services.
It must be something that changes the experience using iTunes else Apple would not post a homepage takeover announcing it.