v-2

I noticed these two designators at the bottom of the screen, above the TGID, on some channels. What is their significance?

Before I spend the time to flash my two scanners, has anyone upgraded their 396/996 to the V2 update and are there noticeable performance improvements on MARCS? I have never performed any of the flash upgrades and from reading some of reports from some of versions I am glad I didn't. I listen...