This will surely be an interesting feature to play with. I like how the fibers were replaced by a polymesh of a fruit at the end. Combined with masking, brushes, and all the other nifty things you can do to a mesh in ZBrush, it looks as if fibers are going to be useful for more than just fur and hair. Think outside the box! 
Your being too hard on it from just watching a preview. It’s low resolution, highly compressed, and mostly shows fiber creation where anti-aliasing is not needed and would steal precious CPU cycles. Render time is where you want anti-aliasing to take place and given the restrictions I just listed, the final renders look fine. I see sparkling during the turntable parts, but that’s sometimes a typical artifact for a video compression algorithm where a lot of compression has been used on footage that isn’t static. Best to wait until we have ZBR2B in our hands before making any judgements on the quality of new features. Most scenes have to be done in passes, then composited and touched up in Photoshop anyways, so even if there is a little bit of aliasing in the final render, it’s probably not going to be all that big of a deal. Who knows though, I’ve been wrong lots of times before lol. 
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