Yosemite Developer Preview 4 can be installed already?

Question

macOS

Who put, tell me, is it usable? Thank you.

Answer 1

If you are not a developer, then you do not need it.
In any other case, you already know the answer to this question.

Answer 2

Usable.
I set 10.10 because. VK in the previous ones did not start. I almost don’t notice the jambs, remembering the alpha kubuntu, everything is ok here.

Answer 3

If you want to play around - install it, especially if there is no working system yet.