I think it's pretty obvious

Rito has stated multiple times that URF is definitely 100% not coming back April first, but it'll be here twice a year because of the upcoming rotating featured game mode queue.

hmm http://i.imgur.com/tqezRa1.gif

hmmmmmmm http://i.imgur.com/qCjHgnz.gif

HMMMMMMMMM http://imgur.com/zJRWF4X

HMMMMMMMMMMMMMMMMMMMMMMMMMMMM http://imgur.com/hwRvkma

Yeah I'm stumped guys, URF isn't coming this April boys.