Easy one to miss, but I happened to catch Dee Bradley Baker being interviewed of the Star Wars Show stream and he seemed to offhanded confirm that 1) The Bad Batch arc is indeed part of the upcoming episode (albeit in a slightly modified form from the reels we've seen) and that 2) Everything else is new. So by implication, no Utapau arc.
I call this good news since as I've stated before, 12 episodes isn't much time to round off the series in a coherent way given where it left off. So if nothing else that means the odds of getting the "Ahsoka's Walkabout" episodes just seem to have gone up. I might also speculate that the modification to the bad Batch arc might be to somehow lead into the plot thread of Rex et al removing their chips down the line.
In Filoni's interview he also mentioned having to retool some of the stories based on what was done later on Rebels (and that he considers them improvements, by-the-by.)
I call this good news since as I've stated before, 12 episodes isn't much time to round off the series in a coherent way given where it left off. So if nothing else that means the odds of getting the "Ahsoka's Walkabout" episodes just seem to have gone up. I might also speculate that the modification to the bad Batch arc might be to somehow lead into the plot thread of Rex et al removing their chips down the line.
In Filoni's interview he also mentioned having to retool some of the stories based on what was done later on Rebels (and that he considers them improvements, by-the-by.)