3. 1 present continuous/be going to for future.

It is common to use the present continuous to talk about things happening now or temporary situations.

It is also possible to use the present continuous to talk about definite future plans and arrangements.

It is common to use an expression of future time with the present continuous, e. g. this weekend, tomorrow morning, later.

Use be going to + infinitive to talk about future plans and predictions.

Usually, we can use both the present continuous and be going to to talk about plans.