I found the sentence below in our local dictionary, which is classified as one of the cleft sentence;
“It will be tomorrow that the schedule will be announced.”
Since I understand the cleft sentence starts with “it is/was/could have been” only and the old information is emphasized, which is already understood between speaker and hearer, I wonder if this sentence could be categorized so.
I really appreciate your explanation.
deepcosmosthe old information is emphasized, which is already understood between speaker and hearer
??? I have never heard of this. You can highlight any phrase from the base form (the uncleft form) of the sentence. Highlighting consists of putting the phrase between "It is/was" and "that".
The schedule will be announced tomorrow.
Highlighting 'the schedule':
It is the schedule that will be announced tomorrow.
It is tomorrow that the schedule will be announced.
The cleft sentence you quoted is only unusual in that it puts the verb tense of the original (will be) in the highlighted position AND in the residue.