He certainly hinted he is by deleting his Instagram today.
He did the same thing at the beginning 2017. Less than two months later, he dropped the back-to-back albums Future and Hndrxx. Later, he capped f his big year f with the Young Thug collab mixtape Super Slimey.
His explained his early 2017 IG break in a Zane Lowe interview.
In addition to deleting his IG content, it's also been a couple weeks since Future's put anything on Twitter, suggesting he's trying to find his musical beast mode, so to speak.