Um, sorry guys, but I need to clarify some things. First of all, looks like there was a misunderstanding and it's not the Galyonkin himself who said this, but some dude on some russian podcast that supposed to know things and act like he is an insider. This is the link to the podcast -
19:51 timestamp if it won't be saved. Anyway, he just said that "he mentioned this already that in the spring, Steam fans will be on rage. I won't tell anything, you will see it yourself once it happens". I'm still not sure how close his ties with epic games and why he is so sure that something really outrageous happens, but that's it. Again, it's not Galyonkin himself, never jump on the gun with stuff like this without exact quotes and proofs, some things might be lost in translation like in this case. And I doubt that many people would be outraged when that unannounced game will be revealed as EGS exclusive on GDC, disappointed yes, but not outraged.