Usb-c passport drives

i have several WD drives…1tb and 2tb…all 3.0 and they work fine. i am extremely pleased with their performance.

new macs will have usb-c drives now and I wonder if WD has passport drives yet.

read that there may be a passport drive but only up to 1gb. is this true?
and in future will there be options for 2-4 or even 6 gb? since usb-c (usb 3.1 or thunderbolt)
is supposed to be so much stronger and faster.

tho just saw popup for wireless drives. tell me about them please