In today's The New 52: Futures End #22, they found out.
On the final pages of the comic, readers were introduced to a monstrous form of Brainiac who said, "Welcome to my world, welcome to The Blood Moon."
Although the new, ginormous villain wasn't named in issue #22, he had previously been referred to as "Brainiac" in Futures End #16 by a group of his robots (and the Brainiac-possessed DC character Engineer) who all said in unison, "We are Brainiac." In that same issue, it was shown that Amethyst, Hawkman and Frankenstein, to whom the robots were talking, were standing on a "spaceship the size of a planet" — presumably, this Brainiac's "blood moon."
In this week's issue, Brainiac was referred to as a "collector," which echoes the surprise ending in last week's Superman Doomed #2, when an unseen collector grabbed Vril Dox, the New 52 Brainiac. That issue also showed Vril Dox being put into a chamber where he could see shards of what appeared to be universes, including several pre-New 52 characters.
Also in this week's Futures End issue, the word balloons for Engineer use the exact same color and font as the robots who were torturing Booster Gold in last week's Booster Gold: Futures End #1. That comic also revealed pre-New 52 characters and concepts, as Booster appeared to travel across different dimensions and time periods.
So… it's a good assumption that this huge Brainiac in Futures End is the same villain from those issues, or is at least linked somehow.
But this week's addition of the villain using the words "Blood Moon" makes the speculation even more interesting. The two words, "blood moon," were first teased by DC Comics in April, when the publisher was initially promoting Futures End. The company released a teaser image for the weekly series that said, "When Futures End…The Blood Moon Shall Rise!" The image showed red skies, which is historically associated with "Crisis" events at DC Comics.
In July, well-known comics blogger Heidi MacDonald from The Beat tweeted from Comic Con International in San Diego that "DC's fill-in moving event is officially called 'Blood Moon'" — referring to the much anticipated April 2015 event that has been hinted about for months, and is expected to tie in to the 30th anniversary of Crisis on Infinite Earths.
As Newsarama pointed out earlier this week, the cover for next week's issue, Futures End #23, not only reveals this new Brainiac, but several other key concepts from the weekly series.
And it's also important to notice that next week's cover features red skies (caused by what appears to be red energy coming from Brainiac's hand) — and within that red energy are the shapes of several pre-New 52 characters.
Of course, the issue also raises a lot of questions. Is this huge Brainiac the main villain in Futures End? How is he linked to Brother Eye, the technology-gone-bad satellite that was previously believed to be the villain who needed stopped?
What does the "Blood Moon," which we now understand to be Brainiac's planet-sized spaceship, have to do with the April 2015 event? With this being a "possible" five-years-later future, does this affect the current day? Or the new Earth 2: World's End weekly, which starts next week?
And will these pre-New 52 characters teased on the cover for issue #23 (and in last week's Superman and Brainiac issues) show up in the weekly? Or is this all just a big lead-in to a spring Crisis for DC?
Before any of those questions can be answered, this new Brainiac (and his "Blood Moon") have to survive their next challenge, as seen on the final page of Futures End #22: a very angry Black Adam, as well as Amethyst, Hawkman, Frankenstein and a just-returned Atom. Let the Blood Moon battle begin.