( Warning: PBE content is highly tentative and subject to change! Some of this information may have been datamined and could likely be erroneous. )
Headhunter Nidalee
Headhunter Nidalee's cougar model made it's way into this patch, as did her new trap particle. Human form is in there too but going to have to wait until the servers come up for that one.
Here the the previous iterations of this patch cycle, just in case you need to catch up.