The app is definitely not their focus, in particular podcasts where the app becomes very slow and crashy as you get hundreds of episodes per feed. Those features still are not present.
ABS does support RSS enough that you can hook a preferred podcast app up to your "local podcast mirror" and only use the ABS app for actual ebooks.
I heard Ritchie called it C after creating it during one of Bell Labs' famous coke parties.
/s