talk soon

short way of saying "talk to you soon"

Her: "I've got to go, see you later"
You, a total unit: "Talk soon"

talk to you soon

When the person is not going to call you back for a while, but they don't want to say that and are trying to be nice about it

"Baby, I'll call you back in a little bit. I'll talk to you soon"

"Ok, talk to you in 3 hours..."

Talk Soon

Refers to when someone, or many people hate, and don’t believe in what you want to achieve, so you simply tell them, Talk Soon.

Talk Soon