There’s another geared-for-adults Transformers show! It’s called Combiner Wars, it’s been out since August of last year, and it’s made up of five minute episodes.
Two sequel short series are planned: Titans Return and Power of the Primes. Just look at the voice actors!
Even though it’s on Verizon’s Go90 network, and is animated terribly (just… it’s bad), go watch it. Because Transformers, that’s why.