Wiktionary
soon to follow
a. expected, or promised to arrive or be produced in the near future.
Usage examples of "soon to follow".
They well knew that from the moment the Hegemon had pronounced his ruling, they were slaves, with the whole population of Earth and the Sol system soon to follow.
The floods, the Mongol invasion, and the plague soon to follow, are not at all part of the main line of Venetian history.
Yet it is to be understood that the entire magic night that is soon to follow is moonlit.
The first stroke had been given that was to break in pieces his boyhood life--the second was soon to follow.