In the unfinished-but-still-canon Clone Wars Legacy, Bad Batch episode 3: "On the Wings of Keeradaks", the Techno Union facility was guarded by what seems to me as a new droid model. It has limbs that can unfold into four arms with built in blasters, and has winged flight capabilities.
What is this droid? What information do we know about it? Are there finished, fully rendered images of it? Does it exist in any of the finished Clone Wars episodes?