I'm new to tamatalk...
Ive got a few tamagotchis (all v4s and v3s)
and I think tamatalk is awesome its got heaps of info and help.
I was searching for tamagotchi sites and thats how I found TT. ;)
yes, there is a v5.
I think they should get new versions because then you can get a collection, and also you would get bored always using the same version even though its the latest, you would want to have new stuff in your tamagotchi. ;)