Here are some upcoming movies sequel in years to come to look out for. It is in order by data of release. Be warned, the list is quite long.

2003
» Shanghai Knights
» The Jungle Book II
» Final Destination 2
» Jeepers Creepers II
» X-Men 2
» The Matrix: Reloaded
» The Fast and the Furious 2
» The Hulk
» Charlie’s Angels: Full Throttle
» Legally Blonde 2: Red, White & Blonde
» Terminator 3: Rise of the Machines
» Bad Boys 2
» Spy Kids 3
» Lara Croft: Tomb Raider: The Cradle of Life
» The Matrix: Revolutions
» Looney Tunes: Back in Action
» The Lord of the Rings: The Return of the King

2004
» The Amazing Spider-Man
» Shrek 2
» Harry Potter and the Prisoner of Azkaban
» Lethal Weapon 5
» Mad Max 4
» The Mask 2: The Son of the Mask
» Mission Impossible 3
» Superman
» Under Siege 3
» The X-Files 2

2005
» Star Wars Episode III
» Indiana Jones 4
» Jurassic Park IV
» Jurassic Park IV
» Wallace & Gromit: The Great Vegetable Plot

In Development
» Batman Beyond
» Batman vs. Superman
» Batman: Year One
» Beverly Hills Cop IV
» Blair Witch 3 (The Prequel)
» The Commitments 2
» Die Hard 4
» Battlefield Earth 2
» DragonBall
» Duke Nukem
» Fantastic Four
» Godzilla 2
» Jumanji 2
» Pretty Woman 2
» Rainbow Six
» Rocky VI
» Rush Hour 3
» Scary Movie 3: Episode I - Lord of the Brooms
» Terminator 4
» Rush Hour 3

Compiled from Upcoming Movies.