Well, its on the list over V4 versions.
I was also planning to install a Vampire into my A1200, but unless there is a really compelling reason, like advantages of using V4 in a A1200 vs standalone; Im letting my A1200 stay in its original state, and enjoy the Standalone.
Ofcourse, I do have a V600, so easy for me to say this, but I got a feeling that my V600 will get little attention once the standalone arrives.
But ofcourse, opinions differ