When does boruto series start? After hearing so many rumours of boruto series I was just wondering when does it actually start if what's been said is true ?
If you are referring to Boruto: Naruto Next Generations then the manga has already been out for a while (May 9, 2016) and is on-going. an anime, as indicated by wikipedia, is scheduled in japan in April

A television adaptation is scheduled to start airing on TV Tokyo in April 2017.

this came from the cited source on Anime News Network which was posted December 17th, 2016.

TV Tokyo opened a website on Saturday to reveal the key visual, cast, and promotional video for the upcoming new Boruto anime series, titled Boruto: Naruto Next Generations. The television anime series will premiere in April.
Crunchyroll is streaming the promotional video on Twitter with English subtitles.