It will be eventually, yep, but not quite yet. We've already built the majority of this technology, but we're still missing bits and pieces for true collaborative editing, so we've got this "turned off" for now.

Expect this feature, real Google-docs style editing, to drop late fall ;)

I saw the "hello" you wrote on my Vectr, "Hello, to you too."

I didn't actually see it appear at the time. Just curious, if it's not "live" how often is it updating?

It should be fairly live, must've missed it. It updates every time you make any change.