Yeah, I guess we'll learn his fate soon enough. In fact though, if he lives through the Clone Wars and and the raid of the Jedi temple, I think I could write another fan-made story based off of Order 66 and Operation: Knightfall. I kinda have the basic storyline in my head, but i need to wait and see Rex's fate in TCW before I write something non-canon (I like my stories to be canon with the rest of the SW universe in case ya couldn't tell.)