If they do produce a Fluke 87-6
they may include the Low Z feature, perhaps an AC proximity sensor alert,
and maybe some SIMPLE by-passable wireless output thingy for computers and phones to receive data.
Otherwise why change a corporate bread winner? 87V is good for another 10 years or more
unless they cheap out the quality to line apathetic shareholders and CEO pockets The 187 and 189 (discontinued) were sort of the successor to the Fluke 87V for years, easy to use like the 87, and great specs, especially on AC.
The current bells n whistles 289 is great too, but the user needs to be familiar with the on-board menus, and wait for it to boot up if needing to use it asap.
It's also bulky but worth lugging around for all the features it sports
FWIW if you need Low Z on an 87V just get the Fluke adapter for it,
or better still buy a used Fluke 114 or 117 that includes that feature,
with the benefit that having two decent meters on a job is way better than just relying on one
especially after a textbook fatal drop on a concrete floor