For me, it's completely un-usable. I've uninstalled it and moved back to 1.3.5. What do you think?
[Warning, rant ahead]
For me, 2.1 is messy. You now go Up to select the media type (movies or shows) then you have to narrow the categories from there until you choose a library. This completely defeats the purpose of creating freakin libraries in the first place. On top of this, it now shows the media of shared Plex accounts, which only adds to the clusterf*ck that is this new UI.