Meaning of FUTURE in English

[adjective] [before noun; not gradable]Of course we'll keep you up to date with any future developments.There's an old superstition that young girls going to bed on this night dream of their future husbands.The success of this product will affect the funding that we receive for any future projects.In grammar the future form of a verb is used when talking about something that will happen or exist.How do you say that in the future tense?You perhaps didn't know about this but for future reference (= so that you will know in the future), could you use the headed paper for any correspondence that leaves this office.The future perfect is the tense which is used to show that an action will have been performed by a particular time. In English it is formed by 'will have' or 'shall have' and a past participle.the future perfect tenseIn the sentence 'By that time I will probably have left,' the verb phrase 'will have left' is in the future perfect.

Cambridge English vocab.      Кембриджский английский словарь.