If you’ve visited the iTunes home page today, then you’ll have been greeted by a banner telling you that ‘Tomorrow is just another day. That you’ll never forget’, right in the spot where you usually see an advert for whatever artist is hot at that moment.

Four clocks below show the time when the ‘exciting announcement from iTunes’ will come, 7am in California, 10am in New York, 3pm in London and midnight in Tokyo, indicating that what’s announced will be an international product, although this banner is only seen on the US iTunes page.

While we’re hoping for iOS 4.2 tomorrow, we can’t imagine this refers to the firmware update, and is more likely to be music or movie related.  Shame.  The majority of speculation revolves around the rumored subscription-based music streaming service, plus it’s also interesting to note the time when all will be revealed – a far more New York-friendly hour, indicating a concern for the financial markets perhaps?

We’ll keep you updated.