Bird Box 2 In Development

Bird Box released on Netflix late in 2018, and millions of accounts watched the film in the first week.
Netflix reported 45 million accounts had watched at least 70% of the movie after it had been available for one week.

So obviously, with the success of the first film, Bird Box 2 is in development.

Josh Malerman, author, wrote the book that the film was based off of.
He has a new sequel coming later in July of 2020 that could potentially be what Bird Box 2 will be about, but there is no confirmation on this.  Either way, get your blindfold on and sit tight, because a second film is on the way.