You've got it wrong. It's V3.
I will not recommend upgrading just yet, because there's no ios app integration, no place to export your private key, no place to import a private key, no method to return to the v2 wallet but making a new account to transfer your coins to, no aliases, and the list goes on.
when u login to the beta wallet, separate login access, go to settings then wallet information and you can link android / apple based on instructions there.
regarding importing private keys, go to settings, adresses and manage the imported addresses to allow u to import keys.
ntil later