Just a quick note to say that the Bad Batch panel, story reels, concept art and databank entries are all now online at StarWars.com.
Here’s the panel:
Judging by the episode numbering (which can be a mistake), this arc fits between Crystal Crisis on Utapau and the forthcoming novel Dark Disciple. Darth Maul: Son of Dathomir then follows.
As a bonus, here’s more on what was planned for The Clone Wars: