How new runewords are released?

People in threads and streamers say that new runewords have been released. Not revealed, but released! What does that mean? Where to they have been released?
Is it new a PTR stage started? Or is it available in current PTR? Or they have been released to some super-secret-stream-only image hosting?

With presentations through streamers, we were shown that the word public is superfluous in PRT

But what do that streamers got? Did they got a new game version or just a plain image of item?
Anyway, what for is that exclusivity? I would be much more happy, if there was some place where all people can see those item images officially.
By the way, when alpha test was started, there were many people get upset, because streamers had priority over other people. But it was really announced that way by devs, so it was fair at least. And now, we got silence from devs and those weird “leaks” someone sees behind somebody’s shoulder… It looks not very… honest.

Perhaps these are just pictures, and the publication of streamers is more successful than official methods and other players will somehow discuss this. For many, their opinion is probably important. Maybe all this will reduce spam on the official forum.