Found out some details regarding the upcoming Star Wars movie - these come from the transcript from a chat between a Star Wars website and the film's producer Rick Mccallum.
No word on the title yet though, and details are sketchy at best.
Star Wars Episode 3 will include the following :
--Large Scale Space Battle at the beginning
--Most Lightsaber Battles ever in one movie
--Mace Windu Battles a Sith Lord (?answer: "Possibly.......")
--All battles will be of a very large scale (paraphrased: "bigger than Geonosis")
--Episode III will bridge the gap between PT & OT
--Episode III will answer MOST unanswered questions.
--Episode III will be around 2 hours long
--Episode III takes place 3 years after AOTC
--Episode III will be rated PG
--We will see A LOT of new worlds
--Hayden has really bulked up for the role. ("Arms as big as Rick's thighs")
--Anakin will be doing some evil things
--Anakin's transition to Vader will be "intense"
--Jar Jar has less screen time than AOTC
--Anakin vs. Obi-Wan will be "awesome"
--Rick personally wouldn't let a 3 year old see Episode III
--Expect a lot of great changes like Clonetroopers to Stormtroopers
--Episode III has a more adventure feel to it
--Christopher Lee is in great shape, ready to go for Episode III
--Ben Burtt's back as sound designer
--There's a new bad guy. ("Yes, expect someone serious.")
--The emperor or Anakin will make use of the darkside of the force...ex..lightning or chokes. ("Yes, and even more.")
--We will see some nice glorious deaths in Episode 3. ("Absolutely. None of these whimpy fights with droids.")
Source : theforce.net