Wiedmann, fresh off of scoring JLA Adventures: Trapped in Time, will be scoring Son of Batman for DC. He posted the trailer on Facebook, where the credits confirm him as the composer.
I have the La La Land release - the score was good. I liked it as much as his recent Justice League score (the Flashpoint Paradox), which was also released by LLL - probably not quite as good as his work on Green Lantern: TAS.
I need to give it a second spin, so I don't have a lot of further insight to give you, but it was a good listen.