The big day has finally come! We just finished [the product, e.g. finished writing our latest book, and waiting for the editor to go through it].
Before we release the book on [your website] and Amazon, we’d like to reward all our loyal supporters by allowing you to pre-order the book, before anyone else.
[add an element of scarcity, e.g. There will be only 2000 books printed in this printing round, so be fast!]
[Add CTA, e.g. Pre-Order now]