WD60EFZX (Red plus 128mb) is 4k native?

Can anyone verify if the WD60EFZX 6tb/128 mb cached version of the Red Plus. Is 4096 native (logical and physical 4096bytes/sector) or still 512e?

c:\fsutil fsinfo ntfsinfo drive

Some info suggests this 6TB drive with 128mn cache is 4kn but the 1-4TB drives with 128mb cache are not. I want to be sure.