Skyline 2 officially announced, titled 'Beyond Skyline'
http://www.denofgeek.com/movies/skyline/30645/skyline-2-coming-liam-od onnell-to-direct
So far:
Liam O'Donnell, the producer/co-writer of the first film is directing and writing the sequel.
Has been in development and re-written since the first film's release.
Official Cannes poster:
http://cdn-static.denofgeek.com/sites/denofgeek/files/styles/insert_ma in_wide_image/public/2/50//beyond_skyline.jpg?itok=cvjOgMHD