Since its release in May, Splatoon has seen a number of free content drops that have brought about new items, maps and more, but it appears as though this stream of content is coming to an end soon. According to a recent Famitsu article, the developers have confirmed that they will no longer be bringing new content to the game come January 2016.
Splatoon Producer Hisashi Nogami detailed that they developers would continue monitor the game to make sure weapons are balanced, but the free content will definitely be coming to an end. On the bright side, Splatfest events will continue on, regardless of the ending content drops.
"[U]pdates that add rules, stages, weapons, gear, etc. will have the last batch in January 2016. But after January they still will adjust weapons for balance if needed. Events like Splatfests will also continue to be held for the foreseeable future."
Nogami wasn't vague as to why the content drops are coming to an end, it appears as though the developers have decided that the game has enough content in it and adding any more would be overkill.
"There are already 14 stages and over 70 kinds of weapons. So if they add even more, it would be hard for players to memorize all of them, especially when considering weapon compatibility with stages."
After six months of constant free DLC updates, it's more than other games can say they've seen come for free. Can't really complain with that. Hopefully we will see another content drop before they call it quits.
[Translated by Nintendo Everything via DualShockers]