Hunter X Hunter anime remake (2011) episode 1 has been released about 2 weeks ago, when I watch there is something different from the old Hunter X Hunter anime (1999). On the remake, seemed to give feel of a cheerful, this is different with old Hunter X Hunter anime (1999). On the old anime many sad scenes such as when aunt Mito crying and when Kitsume Guma killed by Kaito.
But my focus review is the Hunter X Hunter anime remake (2011) do not showing Kaito on the episode 1. If you ever watch the old anime, Gon know his father is a Hunter is from Kaito, but in the remake anime there is no Kaito so it would make the story is not clear or even slightly deviate from the original story (manga). Because how Gon know if his father is a hunter? Maybe the scene Kaito tell about Gon father will be told in some episode.
How Gon meet with Leorio and Kurapika in the anime remake it is very same with how their meeting scene in the manga but different from the old anime, so at this point the old anime is different with the manga.
The conclusion is the Hunter X Hunter anime remake (2011), old Hunter X Hunter anime (1999) and the manga has difference in storytelling.