We have previously reported that Hunter x Hunter is rumored to have a new TV series and its just recently confirmed that a new TV anime series has been planned to air this Fall!
More details will be provided in Weekly Shonen Jump magazine. The last time the said manga had a TV series was on March 31, 2001 which was later followed by a series of OVAs, namely, OVA 1: Genin Ryonan, OVA 2: Greed Island and OVA 3: G.I. FINAL. The TV series lasted for 61 episodes while the OVA series lasted for 30 episodes, all were animated by Nippon Animation.
Source: Uri-Sure Matome + via Anime News Network
More details will be provided in Weekly Shonen Jump magazine. The last time the said manga had a TV series was on March 31, 2001 which was later followed by a series of OVAs, namely, OVA 1: Genin Ryonan, OVA 2: Greed Island and OVA 3: G.I. FINAL. The TV series lasted for 61 episodes while the OVA series lasted for 30 episodes, all were animated by Nippon Animation.
Source: Uri-Sure Matome + via Anime News Network