Board Thread:Questions and Answers/@comment-32136002-20200912203709/@comment-25024589-20200913161002

As of July 17, 2020 at the very least, Ninja Kiwi have no definitive plans to bring Dartling to BTD6.

(And if it were to actually be brought back by some chance, they'd likely have to seriously rebalance everything... Can see 2TC being easily performed with Dartling, haha.)