What does Apple normally announce at events?
This is an open ended question;

Traditionally Apple at events such as MacWorld, WWDC, etc. run down as follows:


Run down of current company progress showcasing how much Mac OS X has grown
New hardware updates with technical details and great product shots.
New software - whether it's upgrades or completely brand new products. Lots of demos.
Occasionally a one more thing, usually the biggest thing of the show if it occurs.