Does/Will Lumia 930 support VoLTE?

[Stuazt]

I have a Lumia 930. I'm wondering whether it supports VoLTE? Tell me if anyone knows. Additionally, my Lumia 930 shows a "4G" instead of "LTE" when I'm on a LTE network. Is 4G equal to LTE or there's a slight difference? Thx, guys