They official posted this on their Facebook Fanpage just earlier.
Based on the information given on their fanpage, Yatterman will air a parallel run starting May 3 at 6pm. Here's how they will air it explained by the admin of the page.
Even if they will air this way, at least we have weekend anime! And that's the point!In simple terms, this is how Yatterman will air. May 1 will be Episode 1, May 2 will be Episode 2. Then, May 3 will be Episode 1, May 4 will be Episode 2, May 5 will be Episode 3 and so on... then at May 8 will be Episode 3 and May 9 will be Episode 4.
UPDATE: Casshern Sins will not air the same way. Bummer.