Reviving the "Planet Of The Apes" franchise has been a top priority for 20th Century Fox for well over a decade now, and even before they made the Tim Burton version of the film in 2001, they had spent years of development time and millions of dollars trying to figure out how to re-introduce talking monkeys to the general population.
In many ways, modern franchise filmmaking began with "Planet Of The Apes," not "Star Wars." Over the course of five movies and both a live-action and an animated television series in the '70s, several variations were played on the basic idea of our modern-day society colliding with a future where apes have become the dominant species and mankind has become a subservient species. Time-travel got involved and eventually the series folded in on itself.
The Tim Burton film was supposed to kick off a whole new series, but poisonous critical reaction and general public indifference killed that plan. Recently, writer/director Scott Frank worked for a while to create a script called "Caesar" which would have jumpstarted the series, starting from a new beginning that would hopefully fold into the original run of movies, narratively-speaking. That version also stalled out, and now Fox is moving forward with a film that will incorporate ideas from a number of different incarnations over the years.