JHipster released a minor update of its Java application generator on October 18, 2020.
Two dependencies have newer versions (here and here[https://github.com/jhipster/generator-jhipster/pull/12664]). Two bug fixes are in, too (here and here).
No, unless you need these dependency updates or bug fixes. JHipster upgrades regenerate your project. That’s why they are at least a minor hassle.
You upgrade JHipster with npm install -g generator-jhipster.
JHipster 7.0 is the next big release. There are three issues left on October 28, 2020. So it could be out in November 2020!