Jobs, 52, may also introduce a larger-screen handheld device for playing music and video and surfing the Web, said Andy Neff, an analyst at Bear Stearns & Co in New York. Apple may also unveil a new version of Apple TV, a US$299 device that connects to TVs and lets people watch movies and shows stored on their PCs.
Apple needs to add more movies to its iTunes store to spur demand for Apple TV, which hasn't been a big seller for the company, Neff said in an interview.
There are more than 500 movies and 550 TV shows available through iTunes.
Munster and Reitzes haven't ruled out a movie-rental service on iTunes.
Apple doesn't have distribution agreements with Sony Pictures, Universal Studios, News Corp's Fox and Warner Brothers, Reitzes said.
"There are some hard core fans that no matter what Jobs announces, that won't be enough," said technology commentator Scott Bourne, who hosts a weekly podcast called the Apple Phone Show.
"And there are some people for who, no matter what he says, are words from God's mouth," Bourne said.
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