Hope no one had hopes for the new Sewn Blitzcrank and Amumu skins

"Sometimes we work on things that just don’t end up hitting our quality bar. And usually, we try to cut those things well before they actually hit PBE, but in this case we were a little too late. The truth is neither Sewn Chaos Blitzcrank nor Sewn Chaos Amumu hit the quality expected of our recent skins, so we’re making the call to remove them. "

They'll be back Soon™. Just like the Ahri statue (RIP 2015).