Heroes of Might & Magic: Olden Era Playtest is now available in your library!

I'm definitely lucky and I'm not sure how much I deserve considering that I haven't played the previous versions of the game (only a little bit of Heroes 3). But I was definitely waiting for this game to come out, I followed Reddit, YouTube, forums, absolutely everything, but I can't find any gameplay anywhere, so my question is if anyone knows if the developers allow me to upload YouTube videos and stream on Twitch. So that those waiting can still see some content?