Apple preps iTunes announcement: Cloud tunes on tap?

Apple on Tuesday will unveil an "exciting announcement from iTunes" and the guessing game has already begun.

The company posted the following on its home page Monday to rev up the guessing game.

So what could it be?

Among the current guesses floating around ZDNet's blog network:

• TV rental model additions to iTunes.
• Cloud storage of music and video to be added to any device.
• The game plan for that North Carolina data center will be revealed.
• iTunes bundling deals with TV makers.
• Streaming music---after all, the Apple announcement will be "streamed."
• Something global in scale. Note the time zones highlighted.

And my write-in: A total rewrite of iTunes to make it lighter and easier to digest on the PC. Now that would be unforgettable.