Of course! Think about anything that is published..
When a band releases a new album, don't they make a huge deal about it first, with teasers and such?
When a new movie's coming out... etc.. etc..
No one knows if these things are any good before they come out (how could they?), so you have to convince them it's worth their time/money! Get them excited about something they can't even have yet, so when they can, they'll be sure and get it.