Future continuous
This describes an event which will be happening at a future point.
Come round in the morning. I'll be painting in the kitchen.
It can also describe events which are going to happen anyway, rather than
events which we choose to make happen.
I won't bother to fix a time to see you, because I'll be calling into the office anyway several times next week.
In some contexts future continuous also sounds more polite than
will. Will you be going to the shops later? If you go, could you get me some milk?
It can also be used to refer to fixed arrangements and plans.
The band will be performing live in Paris this summer. Future perfect
This has both simple and continuous forms, and refers to time which we look back at
from a future point.
In two year's time I'll have finished the book. By the end of the month, I'll have been working for this firm for a year.
It can also be used to express an assumption on the part of the speaker.
You won't have heard the news, of course. (This means that I assume you have not heard the news.)
Other ways of referring to the future
Is/are to be This is used to describe formal arrangements.
All students are to assemble in the hall at 9.00. Be about to, be on the point of, be due to, just/just about to Be about to and
be on the point of both refer to the next moment.
I think the play is about to start now.