Australia http://www.imdb.com/title/tt0455824/ Set around the bombing of Darwin, a WWII Japansese offensive in Australia, w/ Hugh Jackman and Nicole Kidman.
Body of Lies http://www.imdb.com/title/tt0758774/ The writer-director team behind Kingdom of Heaven suit up a CIA story w/ DiCaprio and Crowe.
Brothers http://www.imdb.com/title/tt0765010/ Jake Gyllenhaal and Tobey Maguire playing . . . brothers. The war in Afghanistan figures in, too.
The Brothers Bloom http://www.imdb.com/title/tt0844286/ Soph. effort from Brick writer / director. Con-men flick w/ Rachel Weisz, Adrien Brody, and Mark Ruffalo.
Doubt http://www.imdb.com/title/tt0918927/ John Patrick Shanley adapts and directs his own hit play, Doubt, a religious drama w/ Meryl Streep, PSH, and Amy Adams.
Marley & Me http://www.imdb.com/title/tt0822832/ Adaptation of bestselling book centered around a couple and their dog. Owen Wilson and Jennifer Aniston are the couple.
Milk http://www.imdb.com/title/tt1013753/ Story of openly gay SF mayor, Harvey Milk. Gus Van Sant behind the camera—Franco and Penn in front.
Miracle at St. Anna http://www.imdb.com/title/tt1046997/ Spike Lee takes on WWII, in tale of four American soldiers cornered in a Tuscan village.
Revolutionary Road http://www.imdb.com/title/tt0959337/ Adaptation of the famed novel about a 1950's suburb-dwelling husband and wife: DiCaprio and Winslet. Sam Mendes directs.
The Road http://www.imdb.com/title/tt0898367/ Cormac McCarthy's post-apocalyptic vision rendered by the director of The Proposition and starring Viggo Mortensen.
The Soloist http://www.imdb.com/title/tt0821642/ Robert Downey Jr. is a journalist, and Jamie Foxx is homeless musician. Joe Wright is the director.
Obviously, these aren't the only twenty movies coming out from here until Christmas. I tried to bias the list towards Oscar-buzzed flicks, but if there are any that I forgot / others you're waiting on, do post and tell.