Marvel basically said Steve Blum is Wolverine for life. And since Wolverine is in a lot of Marvel stuff happening right now Blum's quite busy recording as Wolverine. Plus Marvel gives him a ton of cash to record Wolverine too.
However, Blum still manages to fit in dubbing work when he can (he was in Kurokami's dub as a secondary character). He is a union actor, though, which means the only dubs he can voice in are those who pay union wages, such as the Naruto and Kurokami dubs. And he was in Code Geass and Gurren Lagann too who were both union dubs.
So when Moribito returns to US TV in August don't expect to hear Blum's voice even though it is a LA dub. It's non-union.