As i remember, some new dude got hired for these previews. He also had some videos on his yt channel. Search him up. Pretty sure his first video was a cs2 one.
That could be tenz actually whenever riot releases a skin with finisher trailers they have pro players or high ranked radiants do the demo for them so it looks like it helps with aim or gives the allusion it makes you better
if it is I think it will be a sentinel that’s the next agent in order of what they’ve been releasing and the vines could be somewhat as locking down a site stopping the other team from entering