The cold hard facts
Reloaded
The machines learn the location of Zion and plan a devastating attack to destroy the humans' last city.
A new character called the Keymaster holds the knowledge of all access points within The Matrix.
The Keymaster is guarded by the Twins.
After rescuing the Keymaster, Trinity and Morpheus must take him to a hardline so he can be removed from The Matrix... but first they must elude Agents hopping from driver to driver on a crowded freeway.
The brawl between Neo and 100 duplicates of Agent Smith has been confirmed. The reporter for Newsweek was shown this portion of the film in its rough form.
The city in the Matrix is revealed to be a mega-city approximately ten times the size of New York City (which is 7 million people.)
Not all of the machines are "evil", and there are at least two factions jockeying for control over the Matrix world.
Reloaded ends on a mega cliffhanger.
Revolutions
Whereas the majority of action in Reloaded takes place within the Matrix, Revolutions takes place almost entirely in the real world.
Newsweek describes Revolutions as "essentially, from start to finish, one all-out war between the humans and the machines."
Producer Joel Silver said there is one 17-minute sequence in Revolutions that cost two-thirds of the budget of the original Matrix picture (which cost $65 million.)
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courtesy of coming attractions & newsweek