Prior to EA gaining the exclusive Star Wars license and announcing a new Star Wars Battlefront, there was a Battlefront III that Lucasarts cancelled. In fact, there was more than one version of Battlefront III. At one point Rebellion (makers of Alien vs. Predator) was working on the game, before Lucasarts axed that version and gave it to Timesplitters developer Free Radical.
SWTOR Strategies has found two videos from Free Radical’s version of the game, which was basically finished when Lucasarts cancelled it. Both are labeled Pre-Alpha, but it looks pretty decent for a previous-generation Star Wars Battlefront. Here’s the first video, and check out their site for the second: