the drivers in the 6.2.3 extra a re the same as in the 6.2.2, just newly compiled with different kernel settings to match 6.2.3
so maybe try it yourself, its easy, just take the loader and any usb flash drive, replace the extra/extra with the new one and boot,no need to change anything in the grub.cfg like vid/pid so see if its booting and coming up in network
just remove the usb you use for 6.2.2 and try it, you can even let the disks in place as long as you just boot it up
the only driver issue i'm aware of is that there might be newer hardware versions of the onboard intel's that need a newer driver, there should be no difference in that with the 6.2.2 and 6.2.3 extra
and esxi uses the ancient e1000 driver, should work