Vortex: Deadly Master of Air (BTD6)

"New Boss - Vortex! Flying into BTD6 to speed Bloons and stun towers, Vortex will change up Boss strategies yet again!" Vortex: Deadly Master of Air is a confirmed Boss Bloon that will be added to Bloons TD 6 in a future update, expected to be added to Version 31.0. Ninja Kiwi confirmed this on their official Version 30.0 patch notes. According to NK, Vortex will speed bloons and stun towers.

Summary (theoretical)
Obviously, since Vortex has not officially come yet in BTD6, theoretical strategies for Vortex will be based on what was written in the Version 30.0 patch notes. Vortex speeds bloons, making bloons, particularly DDTs, more elusive to catch, and Vortex's potential to stun towers means that long-ranged towers would be even more important.