The Future Progressive is formed with will/shall + be + the -ing form:

I will/shall (I'll) be >
You will (You'll) be >
He will (He'll) be >
She will (She'll) be > expecting you/me.
It will (It'll) be >
We will/shall (We'll) be >
You will (You'll) be >
They will (They'll) be >

The most common use of the progressive form is to describe actions which will be in progress in the immediate or distant future:

• Hurry up! The guests will be arriving at any minute!

• A space vehicle will be circling Jupiter in five years' time.

It is often used for visualizing a future activity already planned:

• By this time tomorrow, I'll be lying on the beach.

• Sometimes the Future Progressive is used to describe simple futurity, but with a 'softening effect' that takes away the element of deliberate intention often implied by will:

• I'll work on this tomorrow. (intention, possibly a promise)

• I'll be working on this tomorrow. (futurity)

In some contexts, the Future Progressive sounds more polite than will, especially in questions when we do not wish to appear to be pressing for a definite answer:

• When will you finish these letters? (e.g. boss to assistant)

• When will you be seeing Mr White? (e.g. assistant to boss)

Sometimes there really is a difference in meaning:

• Mary won't pay this bill. (she refuses to)

• Mary won't be paying this bill. (futurity)

• Will you join us for dinner? (invitation)

• Will you be joining us for dinner? (futurity)

• Won't you come with us? (invitation)

• Won't you be coming with us? (futurity)

The Future Progressive can be used like the Present Progressive to refer to planned events, particularly in connection with travel:

• We'll be spending the winter in Australia. (we are spending)

• Professor Craig will be giving a lecture on Etruscan pottery tomorrow evening. (= is giving)