Everyone knows that Apple sat out last week’s International CES, the largest tech-related trade show in the world.

The big secret is what the famous tech company will reveal during a media event in New York City later this week.

Multiple media outlets reported last week that Apple started to send out invitations for an “education event” on Jan. 19 and that the company would be making some sort of announcement at the gathering.

But other than that, not much else is known about what Apple will reveal. So naturally, many prominent news sources and blogs have been speculating about the event and what the announcement will entail.

Wired points out that there have been rumours swirling about Apple wanting to make some changes to its iBooks platform, which will involve education in some way.

According to eWeek, it’s basically a no-brainer that Apple will likely be showcasing digital textbooks at the event. The magazine also suggests that the iPad will probably be brought up in the context of education.

All Things D reported earlier this month that the event would not involve the upcoming iPad 3 or a widely reported interactive television project, according to its sources.

An unnamed insider told The New York Times that Apple is keen on entering the digital textbook business and that no new products will be unveiled at the event.

We’ll just have to wait until Thursday to find out for sure, but what do you think Apple will announce at the event?