Only one day is left and Apple’s sold-out event will begin and speculating has never been so much fun. During the Worldwide Developer Conference (WWDC), starting June 9 in San Francisco, CEO Steve Jobs is expected to unveil a series of newcomers that will most certainly expand Apple’s fan base even further.

Allegedly on their way are the new versions of the MacBook and MacBook Pro. It is said that they would come with modified designs, as well as with a new feature possibly consisting of a multi-touch track pad surface.

Next up, we may get the chance to see a preview of Mac OS X 10.6, also known as Snow Leopard, normally scheduled for release next year. It was said that it would feature significant "performance enhancements and stability improvements," in order to correct all the problems complaint about with the OS X 10.5, or Leopard.

Another rumor says that a new service is being prepared for launch tomorrow; MobileMe is to replace the .Mac online service for OS X users.

According to TUAW, MobileMe was initially scheduled for release later on this month, but there is a good chance that Apple will take advantage of the huge June 9 event. The service could feature calendars similar to those of Apple iCal, contacts similar to those of Apple Address Book and several other functions.