At some point!
#PS2onPS4 is a confusing hashtag.
PlanetSide 2 is no longer coming to PS4 this month, but it'll still show up sometime this year. And if you can get some friends to play, it's pretty good fun, what with the large scale battles unfolding in front of you. It's like the stuff from the background in most games, but real people are flying the ships and exploding things.