There has been some information running around about the next mystery box release. Previous years has been Dreadfleet and Space Hulk, could this year be Blood Bowl? A lot of hints point to it.
via Fritz at Fritz 40k
So then more out of curiosity I ask if GW was going to do another mystery box release like Space Hulk and Dreadfleet, and was surprised at how fast I got a response- YES, and how it is most likely going to be Blood Bowl.
via an Anonymous source from the Faeit 212 inbox
October will be the "Mystery Box", Eldar likely to be November, the same slots as we had for the box game and codex CSM.