It is also pitty that private EA for every new version is designed for customers who are willing to put new version into PROD environment.
I am pretty sure many bugs are discovered in PROD, but not every customer is willing to install test version, officially not supported, into PROD environment. Of course, you will get full and direct support by R&D.
Not everything can be checked in LAB and thus might be tricky to replicate in LAB while present in PROD (and vice versa).
Looking forward how many bugs will be present for very first JHF within R82. R82 is alignment of R81.20 JHF Take 89. Recently Take 90 for R81.20 is released with tons of new issues declared as fixed. Most of them might be relevant for R82, while many new just for R82.
Not saying that VSNext can be used only by complete new installation (cannot be activated by upgrade from different version). VSNext can be used only on Check Point appliances. Open Servers are not supported by VSNext. You can also check sk79700 which features are supported by R82 VSNext compared to R82 "legacy" VSX and other VSX versions.
Kind regards,
Jozko Mrkvicka