Apple will launch a new iPad version with a thinner body and an iPad mini with a high resolution Retina screen, The Wall Street Journal reported according to some Apple suppliers.

An invitation sent a few days ago from Apple's desk to media pointed out that the Cupertino's company will announce a set of upgraded set of major products tomorrow starting from a new MacBook line to an Apple TV.

"There have lately been some reports that claim the iPad mini with Retina screen won't see light until early 2014 due to the supply of 7.9-inch high resolution display limited," the report added. "Some other reports suggest Apple will launch the Retina iPad mini tomorrow, but continue selling the original variant."

Further, Apple could launch the new Mavericks OS and the long-awaited Mac Pro, while there are some rumors about the unlikely launch of a smart watch called iWatch.

Apple event will take place at the Yerba Buena Center for the Arts Theater in San Francisco as usual, a much bigger venue than where the company held iPhone 5C and iPhone 5S's event that suggests Apple is launching something important.