Board Thread:Manga/@comment-31272544-20170301102531/@comment-26095689-20170302073302

No. The issue is ALWAYS 1 month ahead. Eg. Chapter 90 was March issue of Bessatsu Shonen Magazine.

As you can see here https://twitter.com/BETSUMAGAnews/status/836819619436441600 from the Magazine's twitter. This will be the April issue that contains Chapter 91 and will be released on March 9th.