It comes in a different range of colors, with a stand and with the USB cable. Does it come with recording software though?
Yes the Blue Yeti does come with a recording software called Yeti Studio that you can use. You really do not need it though as there are free solutions out there that you can use to record usb audio onto like Audacity which is a great free light software. You could even use things like FL Studio, Garageband, Camstasia or Ableton.
Does the blue yeti need a pop filter?
No the Blue Yeti does not need a pop filter although it can increase the sound quality by minimizing the sharp hisses and pops you get from wind you generate by accident through your mouth which can get picked clearly through a blue yeti without the pop filter.