just the facts (http://www.theforce.net/episode3/jtf/jarjar.asp):
Jar Jar Binks
Jar Jar Binks wears a new dark maroon outfit. - OS
"Jar Jar's role is smaller than Ep II." - RM
Jar Jar's senatorial robes are a dark red and violet scheme and cover much of his body. - OS
In the Senate Rotunda scene the Naboo delegation includes Senator Amidala, Captain Typho, Jar Jar Binks, and Kristy Wright as a handmaiden. The seat next to Amidala is empty, awaiting a guest. - OS
C-3PO will have a scene(s) with Jar-Jar. - AD
Jar Jar's role in Ep3 is not that important. - PH
Jar Jar has a scene with C-3PO. - AD
Jar Jar will still be part of the Naboo delegation, of which Padmé is the leader. I don't think there is a Loyalist committee anymore -- it was meant to function during the Separatist crisis, before the outbreak of the war. - PH
In one scene, Palpatine leads the way as Senators and Representatives follow closely: Bail Organa, Jar Jar Binks, Orn Free Taa, Mon Mothma, Tundra Dowmeia and his new aide. Fang Zar, Giddean Danu, Malé-Dee, Nee Alvar, Chi Eekway, Terr Taneel, and Fema Baab are there as well, along with the as-yet-unnamed Mon Calamari Senator. - OS
Jar Jar turns his head and looks at someone. - PH
and the worst fact:
Jar Jar does not die in the film. - RM
🙁