What is i ll come on?

"I'll come on" is an expression used to indicate that someone will arrive or attend a specific event or location. This phrase is commonly used to confirm one's presence or participation in a future activity. It can be used casually in everyday conversation or in a more formal setting to convey one's intentions or plans to be present. Overall, "I'll come on" is a simple and straightforward way to communicate one's attendance or arrival.