First of all...welcome to the forum!
Now...the V8 has an english interface right out of the box in China.
it's pretty shoddy...
Our Forum Member LVD is working hard together with others and creating a better working version of the V8.
The problems are not so much in the user interface than in the text-formatting of the viewers. Chinese text layout is fundamentally different from ours and the chinese makers of these devices haven't taken that into consideration since the V8 was actually meant for the chinese market only.
If you browse around the last couple of thread here you can see that it's starting to get better. I think the .txt viewer is quite usable right now (look a the screenshots TaKir provided).
The V8 isn't really available for the European and US market yet, bur LVD on these forums told me that it should start coming available around July 10th. Best talk to him personally by PM.
Your only other option at the moment would be to order from Jinke directly, but you would get the original chinese device then and it's text-layout problems are still rather pronounced.
Talk to LVD and TaKir, they should be able to help you.