Souce: NARUTO: Nearing The End of a Manga Era | WhatCulture!
Earlier today, Manga Entertainment UK (The UK Distributor of numerous anime titles; including Naruto and Naruto Shippuden) shared this link on their Facebook page which details that Masashi Kishimoto's best-selling manga that began in 1999 will end within the next year.
To those following the series, this is no surprise. The current story arc is the "Fourth Shinobi World War" , which features the five "ninja villages" joining up in war against the big-bad Madara Uchiha, his organisation the Akatsuki, and their army of immortal zombies/tree-things (yes, I'm serious). With Akatsuki's numbers dwindling, and Naruto now joining the war, the series is no doubt at it's end, even if this source happens to be false.