Conversation so far:
What is the DC Rebirth?
the new DC continuity relaunch, DC Rebirth.
When was the relaunch?
in Batman #19.
Did it recieve any recognition?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Blackmailing the approaching guards with details of their children and families, Riddler walks out freely before intruding into Joker's office.
What does he do then?
Riddler seemingly offers the Joker a partnership, acknowledging that if either of the two men individually kill Batman, the other will be left forever unsatisfied.

Question: Does Joker accept?
Self-contained rewrite: Does Joker accept the partnership with Riddler?