Student or Learner
I'd like to ask about the use of should.
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If it's "The site will be available again shortly", which sounds more familiar to me, is the meaning different?
"Will" is a more positive, guarantee type of statement. "Should" allows for some doubt about the outcome. If you are trying to reassure people, say "will." If you want to tell your boss the problem is going to be fixed, but you don't want to make a firm promise, then say "should."