Let's start with a few cover variants. First we have a new variant for issue #6 drawn by Miguel Mercado. This issue is due on January 27 for $4.99. You can see the solicitation and the two other covers here.
Next we have a variant cover for issue #4 drawn by Jonboy Meyers. You may recognize Meyers if you are a DC Comics fan, known for his work on Superman to Teen Titans. Issue #4 is out on November 25.
And now we've reached the controversial part of this post -- the issue #4 preview pages. From here on out, there will be SPOILERS for issue #3 and #4. Proceed at your own discretion.