Future: present continuous to talk about the future (I’m working tomorrow)

The present continuous can refer to the future. It shows that we have already decided something and usually that we have already made a plan or arrangements:

[talking about plans for a tour by a rock music group]
The band is visiting Denmark next May.
I am taking the train to Paris tomorrow.

warning

We don’t use the present continuous when we predict something. Instead, we use going to or will:

It*’s going to** rain again soon.*
Not: ~~It’s raining again soon.~~