Tasks that were earlier hard/borderline impossible to do are now simple. One common example would to apply a different template set to nested sections; you can now apply a custom Type to these sections using path="/blog/*/**" and similar.
A related improvement is that the build optionrender is now an enum. In addition to turning on/off rendering of a given page you can tell Hugo to not render, but you want to preserve the .Permalink, useful for SPA applications.
This release represents 35 contributions by 8 contributors to the main Hugo code base. A big shoutout to @bep, @ai, and @jmooring for their ongoing contributions.
And a big thanks to @digitalcraftsman for his relentless work on keeping the themes site in pristine condition and to @davidsneighbour, @coliff and @kaushalmodi for all the great work on the documentation site.