it has been CONFIRMED by rick mccallum that jar jar will NOT die in episode 3.i was on the force . net and rick also gave a lod more info like
episode 3 will end on a sad note,we will see palpatine use his dark force powers in episode 3 and that the new sith(not anakin)in episode 3 has two lightsabers that can join together(so it is possible that the new sith is asajj ventress)